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Family:
Bibliography
  1. Cokayne, George Edward, Complete Peerage of England, Scotland, Ireland, Great Britain, and the United Kingdom, extant, extinct, or dormant, vol 10, Oakham-Richmond. London: St Catherine Press, 1945. Reprinted (4 per page) Gloucester: A Sutton, 1982. Available at https://familysearch.org/search/catalog/271412 Information from this source tagged as [Ref: CP X [Ap][p0-9].*].
  2. Richardson, Douglas, Royal Ancestry. Salt Lake City, Utah: Douglas Richardson, 2013. NYPL JFF 16-1184 v1-5 Information from this source tagged as [Ref: Richardson RoyalAnc v4p[0-9]*].

Sources for birth and parent Information
date:
younger son [Ref: CP X p462(a)]
younger son, abt 1332 (age 19 in 1351) [Ref: Richardson RoyalAnc v4p351],
parents:
[Ref: CP X p462(a), Richardson RoyalAnc v4p350]
Sources for death Information
date:
[Ref: Richardson RoyalAnc v4p351]
1368 [Ref: Richardson RoyalAnc v4p231],
place:
[Ref: Richardson RoyalAnc v4p351]
Sources for burial Information
place:
[Ref: Richardson RoyalAnc v4p351]
Research Notes:
Bishop of Norwich [Ref: Richardson RoyalAnc v4p350]

1349: legatee in will of his father [Ref: Richardson RoyalAnc v4p351]

1351: studied at Oxford University under Master William de Blythe; obtained B.A. and M.A. degres from Oxford [Ref: Richardson RoyalAnc v4p351]

1355: chosen Bishop of Norwich by papal provision [Ref: Richardson RoyalAnc v4p351]

1356-69: Bishop of Norwich [Ref: CP X p462(a)]

will dated 25 May 1368, pro 17 Nov 1369 [Ref: Richardson RoyalAnc v4p351]



Pedigree of Thomas De PERCY, Bishop of Norwich
                                                                /-----Henry II Of Brabant, Count Of Lorraine
                                                       /-----Godfrey I The Bearded Duke Of Brabant
                                                      |         \-----Adelaide Of Betuew
                                              /-----Jocelin LOUVAIN, Lord Of Petworth
                                     /-----Sir Henry De PERCY
                                    |        |                  /-----Alan De PERCY, Baron Of Topcliffe
                                    |        |         /-----William De PERCY, Baron Of Topcliffe
                                    |        |        |         \-----Emma De GANT
                                    |         \-----Agnes De PERCY
                                    |                 |         /-----Richard FITZ GILBERT De CLARE, Baron Of Clare
                                    |                  \-----Adeliza De TUNBRIDGE
                                    |                           \-----Adeliza Le MESCHIN
                            /-----Sir William De PERCY, Baron Of Topcliffe
                           |        |                           /-----Robert De BRUS, Baron Of Skelton
                           |        |                  /-----Adam De BRUS, Baron Of Skelton
                           |        |                 |         \-----Agnes PAYNEL
                           |        |         /-----Adam II De BRUS, Baron Of Skelton
                           |        |        |        |         /-----Stephen Of Aumale, Lord Of Holderness
                           |        |        |         \-----Agnes Of Aumale
                           |        |        |                  \-----Hawise De MORTIMER
                           |         \-----Isabel De BRUS
                           |                 |                  /-----Osbert De ARCHES
                           |                 |         /-----William De ARCHES
                           |                 |        |         \-----Maud
                           |                  \-----Juetta De ARCHES
                           |                           \-----Jueta
                   /-----Sir Henry De PERCY, Baron Of Topcliffe
                  |        |                                    /-----(Unk) De BALLIOL
                  |        |                           /-----Hugh De BALLIOL
                  |        |                  /-----Joscelin De BALLIOL
                  |        |         /-----Ingram De BALIOL
                  |         \-----Ellen BALIOL
                  |                 |         /-----Walter De BERKELEY
                  |                  \-----(Unk Dau) De BERKELEY
          /-----Sir Henry PERCY, Lord Percy
         |        |                                             /-----Fulk V The Young Count Of Anjou, King Of Jerusalem
         |        |                                    /-----Geoffrey Plantagenet Count Of Anjou, Duke Of Normandy
         |        |                                   |         \-----Erembourg Of Maine
         |        |                           /-----Hameline PLANTAGENET, Earl Of Surrey
         |        |                  /-----William De WARENNE, Earl Of Surrey
         |        |                 |        |                  /-----William II De Warrene, Earl Of Surrey
         |        |                 |        |         /-----William III De WARRENNE, Earl Of Surrey
         |        |                 |        |        |         \-----Isabel De Vermandois, Countess Of Leicester
         |        |                 |         \-----Isabel De WARENNE, Countess Of Surrey
         |        |                 |                 |         /-----William III TALVAS, Count Of Alencon And Ponthieu
         |        |                 |                  \-----Ela TALVAS
         |        |                 |                           \-----Helie/Alice Of Burgandy
         |        |         /-----John De WARENNE, Earl Of Surrey
         |        |        |        |                           /-----Gilbert GIFFARD, Marshal
         |        |        |        |                  /-----John Fitz GILBERT The Marshal
         |        |        |        |                 |         \-----(Unk dau) De VENOIZ
         |        |        |        |         /-----Sir William MARSHALL, Protector, Earl Of Pembroke
         |        |        |        |        |        |         /-----Walter De SALISBURY, Baron Of Chitterne
         |        |        |        |        |         \-----Sibyl De SALISBURY
         |        |        |        |        |                  \-----Sibyl De CHAWORTH
         |        |        |         \-----Maud MARSHALL
         |        |        |                 |                  /-----Gilbert De CLARE, Earl Of Pembroke
         |        |        |                 |         /-----Richard "Strongbow" De CLARE, Earl Of Pembroke
         |        |        |                 |        |         \-----Elizabeth De BEAUMONT
         |        |        |                  \-----Isabel De CLARE, Countess Of Pembroke
         |        |        |                          |         /-----Dairmait Mac MURCHAD, King Of Leinster
         |        |        |                           \-----Aoife Macmurchada Of Leinster
         |        |        |                                    \-----Mor Ua TUATHAIL
         |         \-----Eleanor De WARENNE
         |                 |                                    /-----Hugh VIII Sire De Lusignan
         |                 |                           /-----Hugh Sire De Lusignan
         |                 |                          |         \-----Burgundia Dame De Fontenay
         |                 |                  /-----Hugh IX De Lusignan, Sire De Lusignan
         |                 |                 |         \-----Orengarde
         |                 |         /-----Hugh X De Lusignan, Count Of La Marche
         |                 |        |        |                  /-----Pierre I Sire De Preuilly
         |                 |        |        |         /-----Pierre II Sire De Preuilly
         |                 |        |         \-----Agatha De Preuilly
         |                 |        |                  \-----Aenor De Mauleon
         |                  \-----Alfais De LUSIGNAN
         |                          |                           /-----Wulgrim II Tailefer, Count Of Angouleme
         |                          |                  /-----William Guillaume IV Tailefer, Count Of Angouleme
         |                          |                 |         \-----Ponse De Montgomery
         |                          |         /-----Aymer Tailefer, Count Of Angouleme
         |                          |        |        |         /-----Raymond I Vicount Of Turenne
         |                          |        |         \-----Marguerite De Turenne
         |                          |        |                  \-----Maude De Perche
         |                           \-----Isabel Of Angouleme
         |                                   |                  /-----Louis VI The Fat King Of France
         |                                   |         /-----Peter Of France, Lord Of Courteney
         |                                   |        |         \-----Adelaide Of Savoy
         |                                    \-----Alice De Courtenay
         |                                            |         /-----Renaud De Courtenay, Seigneur De Courtenay
         |                                             \-----Elizabeth De Courtenay
         |                                                      \-----Hedwig Du DONJON
 /-----Henry De PERCY, Lord Percy
|        |                                                      /-----William FITZALAN, Baron Of Oswestry
|        |                                             /-----William FITZALAN, Baron Of Oswestry
|        |                                            |         \-----Isabel De SAY
|        |                                    /-----John FITZALAN, Baron Of Oswestry
|        |                                   |        |         /-----Hugh De LACY, Baron Of Weobley
|        |                                   |         \-----(Unk Dau) De LACY
|        |                                   |                  \-----Roheis De MONMOUTH
|        |                           /-----Sir John FITZALAN, Earl Of Arundel
|        |                          |        |                  /-----William D'AUBIGNY, Earl Of Sussex And Arundel
|        |                          |        |         /-----William D'AUBIGNY, Earl Of Arundel
|        |                          |        |        |         \-----Maud St. HILLARY
|        |                          |         \-----Isabel D'AUBIGNY
|        |                          |                 |         /-----Hugh Of Kevelioc, Earl Of Chester
|        |                          |                  \-----Mabel Of Chester
|        |                          |                           \-----Bertrade De MONTFORT
|        |                  /-----Sir John FITZALAN, Earl Of Arundel
|        |                 |        |                           /-----Harvey WALTER
|        |                 |        |                  /-----Theobald WALTER
|        |                 |        |                 |         \-----Maud De VALOINES
|        |                 |        |         /-----Theobald Le BOTELER
|        |                 |        |        |        |         /-----Sir Robert VAVASOUR
|        |                 |        |        |         \-----Maud VAVASOUR
|        |                 |        |        |                  \-----(Unk) De BIRKIN
|        |                 |         \-----Maud De VERDUN
|        |                 |                 |                  /-----Bertram De VERDUN
|        |                 |                 |         /-----Nicholas De VERDUN
|        |                 |                 |        |         \-----Matilda FERRERS
|        |                 |                  \-----Rohese De VERDUN
|        |                 |                           \-----Clemence
|        |         /-----Sir Richard FITZ ALAN, Earl Of Arundel
|        |        |        |                                    /-----Hugh De MORTIMER, Baron Of Wigmore
|        |        |        |                           /-----Roger De MORTIMER, Baron Of Wigmore
|        |        |        |                          |         \-----Maud De MESCHINES
|        |        |        |                  /-----Ralph MORTIMER, Baron Of Wigmore
|        |        |        |                 |        |         /-----Walkeline FERRERS, Lord Of Oakham
|        |        |        |                 |         \-----Isabel De FERRIERS
|        |        |        |         /-----Sir Roger MORTIMER, Baron Of Wigmore
|        |        |        |        |        |                  /-----Iorworth Drwyndwn Prince Of Gwynedd
|        |        |        |        |        |         /-----Llewellyn Fawr The Great AP IORWORTH, Prince Of North Wales
|        |        |        |        |        |        |         \-----Margred Ferch Madog
|        |        |        |        |         \-----Gladys DHU
|        |        |        |        |                 |         /-----Llywarch Goch
|        |        |        |        |                  \-----Tangwystl Of Rhos
|        |        |         \-----Isabel MORTIMER
|        |        |                 |                           /-----William De BRAOS, Baron Of Bramber
|        |        |                 |                  /-----Reginald De BRAOS, Baron Of Bramber
|        |        |                 |                 |         \-----Matilda De ST VALERIE De HAIA
|        |        |                 |         /-----William De BRAIOSE, Baron Of Brecknock Castle
|        |        |                 |        |        |         /-----Sir William De BRIWERE, Baron Of Horsley
|        |        |                 |        |         \-----Gracia De BRIWERE
|        |        |                 |        |                  \-----Beatrice De VALLE
|        |        |                  \-----Maud De BRAOISE
|        |        |                          |                  /-----John Fitz GILBERT The Marshal
|        |        |                          |         /-----Sir William MARSHALL, Protector, Earl Of Pembroke
|        |        |                          |        |         \-----Sibyl De SALISBURY
|        |        |                           \-----Eve MARSHALL
|        |        |                                   |         /-----Richard "Strongbow" De CLARE, Earl Of Pembroke
|        |        |                                    \-----Isabel De CLARE, Countess Of Pembroke
|        |        |                                             \-----Aoife Macmurchada Of Leinster
|         \-----Eleanor FITZ ALAN
|                 |                                             /-----Manfred I Margrave Of Saluzzo
|                 |                                    /-----Manfred II Margrave Of Saluzzo
|                 |                                   |         \-----Elena Of Arborea
|                 |                           /-----Bonifacio Of Vasto
|                 |                          |        |         /-----William V Margrave Of Montferrat
|                 |                          |         \-----Adilasia Of Monferrat
|                 |                          |                  \-----Judith Of Austria
|                 |                  /-----Manfred III Margrave Of Saluzzo
|                 |                 |        |                  /-----Barisone II Judicarius Of Torres
|                 |                 |        |         /-----Comita II Judicarius Of Torres
|                 |                 |        |        |         \-----Preziosa Of Orrubu
|                 |                 |         \-----Maria Of Torres
|                 |                 |                 |         /-----Barisone I Judicarius Of Arborea
|                 |                 |                  \-----Ispella Of Arborea
|                 |                 |                           \-----Pellegrina Of Lacon
|                 |         /-----Thomas I Margrave Of Saluzzo
|                 |        |        |                           /-----Humbert III Count Of Savoy
|                 |        |        |                  /-----Thomas I Count Of Savoy
|                 |        |        |                 |         \-----Beatrix Of Macon
|                 |        |        |         /-----Amadeus IV Count Of Savoy, Marquess Of Turin
|                 |        |        |        |        |         /-----William I Count Of Geneva
|                 |        |        |        |         \-----Margaret Of Geneva
|                 |        |        |        |                  \-----Beatrix De FAUCIGNY
|                 |        |         \-----Beatrice Of Savoy
|                 |        |                 |                  /-----Eudes II Duke Of Burgundy
|                 |        |                 |         /-----Hugh III Duke Of Burgundy
|                 |        |                 |        |         \-----Mary Of Blois
|                 |        |                  \-----Anna Of Burgundy
|                 |        |                          |         /-----Guido Count Of Viennois
|                 |        |                           \-----Beatrix Of Albon
|                 |        |                                    \-----Beatrix Of Montferrat
|                  \-----Alasia Of Saluzzo
|                          |                                    /-----Anselmo Marquis Of Ceva
|                          |                           /-----Guglielmo I Marquis Of Ceva
|                          |                  /-----Guglielmo II Marquis Of Ceva
|                          |         /-----George Of Ceva, Marquis Of Ceva
|                          |        |        |                  /-----Manfred I Margrave Of Saluzzo
|                          |        |        |         /-----Manfred II Margrave Of Saluzzo
|                          |        |        |        |         \-----Elena Of Arborea
|                          |        |         \-----(Unk) De Vasto
|                          |        |                 |         /-----William V Margrave Of Montferrat
|                          |        |                  \-----Adilasia Of Monferrat
|                          |        |                           \-----Judith Of Austria
|                           \-----Luisa Of Ceva
|                                    \-----Menzia De ESTE
Thomas De PERCY, Bishop of Norwich
|                                                               /-----Richard Fitz PONS, Baron Of Clifford
|                                                      /-----Walter De CLIFFORD, Baron Of Clifford
|                                                     |         \-----Maud Of Gloucester
|                                             /-----Walter CLIFFORD, Baron Of Clifford
|                                            |        |         /-----Ralph IV De TOENI, Baron Of Flamstead
|                                            |         \-----Margaret De TOENI
|                                            |                  \-----Alice Of Northumberland
|                                    /-----Roger CLIFFORD
|                                   |        |                  /-----Robert De CONDET, Lord Of Thorngatge
|                                   |        |         /-----Roger De CONDET
|                                   |        |        |         \-----Adeliza Le MESCHIN
|                                   |         \-----Agnes De CONDET
|                           /-----Roger CLIFFORD
|                          |        |                           /-----Harold De SUDELEY, Baron Of Ewyas Harold
|                          |        |                  /-----Robert De EWYES, Baron Of Ewyas Harold
|                          |        |                 |         \-----Agnes Of Merleberg
|                          |        |         /-----Robert De EWYES, Baron Of Ewyas Harold
|                          |        |        |         \-----Sibil
|                          |         \-----Sibilla De EWYAS
|                          |                  \-----Petronilla
|                  /-----Roger De CLIFFORD
|                 |         \-----Maud
|         /-----Robert De CLIFFORD, Lord Clifford
|        |        |                                    /-----William De VIPONT
|        |        |                           /-----Robert De VIPONT, Baron Of Appleby
|        |        |                          |        |         /-----Hugh De MORVILLE, Constable Of Scotland
|        |        |                          |         \-----Matilda De MORVILLE
|        |        |                          |                  \-----Beatrice BEAUCHAMP
|        |        |                  /-----John De VIPONT, Baron Of Appleby
|        |        |                 |        |                  /-----Richard De BUISLY
|        |        |                 |        |         /-----John De BUISLY
|        |        |                 |         \-----Idonea De BUISLY
|        |        |                 |                 |         /-----William De BUSSEY, Baron Of Old Wardon
|        |        |                 |                  \-----Cicely De BUSLI
|        |        |                 |                           \-----Rose FITZ GILBERT
|        |        |         /-----Robert De VESPONT
|        |        |        |        |                           /-----Robert De FERRERS, Earl Of Derby
|        |        |        |        |                  /-----William FERRERS, Earl Of Derby
|        |        |        |        |                 |         \-----Margaret PEVERIL
|        |        |        |        |         /-----William De FERRERS, Earl Of Derby
|        |        |        |        |        |        |         /-----William De BRAOS, Baron Of Bramber
|        |        |        |        |        |         \-----Sibyl De BRAOISE
|        |        |        |        |        |                  \-----Bertha Of Hereford
|        |        |        |         \-----Sibilla De FERRERS
|        |        |        |                 |                  /-----Ranulf De GERNON, Earl Of Chester, Vicomte D'Avranches
|        |        |        |                 |         /-----Hugh Of Kevelioc, Earl Of Chester
|        |        |        |                 |        |         \-----Maud De CAEN
|        |        |        |                  \-----Agnes Of Chester, Lady Of Chartley
|        |        |        |                          |         /-----Simon De MONTFORT, Count Of Evreux
|        |        |        |                           \-----Bertrade De MONTFORT
|        |        |        |                                    \-----Maud
|        |         \-----Isabel De VESPONT
|        |                 |                           /-----Piers De LUTEGARESHALE
|        |                 |                  /-----Geoffrey FITZ PIERS, Earl Of Essex
|        |                 |                 |         \-----Maud
|        |                 |         /-----Sir John FITZ GEOFFREY
|        |                 |        |        |                  /-----Richard FITZ GILBERT De CLARE, Baron Of Clare
|        |                 |        |        |         /-----Roger De CLARE, Earl Of Hertford
|        |                 |        |        |        |         \-----Adeliza Le MESCHIN
|        |                 |        |         \-----Aveline De CLARE
|        |                 |        |                 |         /-----James De St HILARY, Baron Of Field Dalling
|        |                 |        |                  \-----Maud St. HILLARY
|        |                 |        |                           \-----Aveline
|        |                  \-----Isabel FITZ JOHN
|        |                          |                           /-----Hugh BIGOD, Earl Of Norfolk And Suffolk
|        |                          |                  /-----Roger BIGOD, Earl Of Norfolk, MC Surety
|        |                          |                 |         \-----Juliana VERE
|        |                          |         /-----Hugh BIGOD, Earl Of Norfolk, MC Surety
|        |                          |        |        |         /-----Ralph V De TOENI, Baron Of Flamstead
|        |                          |        |         \-----Ida Countess Of Norfolk
|        |                          |        |                  \-----Margaret De BEAUMONT
|        |                           \-----Isabel BIGOD
|        |                                   |                  /-----John Fitz GILBERT The Marshal
|        |                                   |         /-----Sir William MARSHALL, Protector, Earl Of Pembroke
|        |                                   |        |         \-----Sibyl De SALISBURY
|        |                                    \-----Maud MARSHALL
|        |                                            |         /-----Richard "Strongbow" De CLARE, Earl Of Pembroke
|        |                                             \-----Isabel De CLARE, Countess Of Pembroke
|        |                                                      \-----Aoife Macmurchada Of Leinster
 \-----Idonia De CLIFFORD
         |                                                      /-----Richard FITZ GILBERT De CLARE, Baron Of Clare
         |                                             /-----Roger De CLARE, Earl Of Hertford
         |                                            |         \-----Adeliza Le MESCHIN
         |                                    /-----Richard De CLARE, Earl Of Hertford, MC Surety
         |                                   |        |         /-----James De St HILARY, Baron Of Field Dalling
         |                                   |         \-----Maud St. HILLARY
         |                                   |                  \-----Aveline
         |                           /-----Sir Gilbert De CLARE, Earl Of Hertford And Glouceste
         |                          |        |                  /-----Robert The Consul De CAEN, Earl Of Gloucester
         |                          |        |         /-----William Meullant FITZ ROBERT, Earl Of Gloucester
         |                          |        |        |         \-----Maud FITZ HAMOND
         |                          |         \-----Amice MEULANT, Countess Of Gloucester
         |                          |                 |         /-----Sir Robert II De Beaumont, Earl Of Leicester
         |                          |                  \-----Hawise DeBEAUMONT
         |                          |                           \-----Amicia De Gael
         |                  /-----Richard De CLARE, Earl Of Gloucester And Hertfor
         |                 |        |                           /-----Gilbert GIFFARD, Marshal
         |                 |        |                  /-----John Fitz GILBERT The Marshal
         |                 |        |                 |         \-----(Unk dau) De VENOIZ
         |                 |        |         /-----Sir William MARSHALL, Protector, Earl Of Pembroke
         |                 |        |        |        |         /-----Walter De SALISBURY, Baron Of Chitterne
         |                 |        |        |         \-----Sibyl De SALISBURY
         |                 |        |        |                  \-----Sibyl De CHAWORTH
         |                 |         \-----Isabel MARSHALL
         |                 |                 |                  /-----Gilbert De CLARE, Earl Of Pembroke
         |                 |                 |         /-----Richard "Strongbow" De CLARE, Earl Of Pembroke
         |                 |                 |        |         \-----Elizabeth De BEAUMONT
         |                 |                  \-----Isabel De CLARE, Countess Of Pembroke
         |                 |                          |         /-----Dairmait Mac MURCHAD, King Of Leinster
         |                 |                           \-----Aoife Macmurchada Of Leinster
         |                 |                                    \-----Mor Ua TUATHAIL
         |         /-----Thomas DeCLARE, Lord Of Thomond
         |        |        |                                    /-----Richard FITZ EUSTACE, Constable Of Chester
         |        |        |                           /-----John Fitz Richard, Constable Of Chester
         |        |        |                          |         \-----Albreada LIZOURS, Baroness Of Pontfract
         |        |        |                  /-----Roger De LACY, Baron Of Pontefract
         |        |        |                 |        |         /-----Roger FITZ RICHARD, Baron Of Warkworth
         |        |        |                 |         \-----Alice Fitz Roger
         |        |        |                 |                  \-----Alice De VERE
         |        |        |         /-----John De LACY, Earl Of Lincoln, MC Surety
         |        |        |        |        |                  /-----Hugh III Seigneur De Puiset, Vicount Chartres
         |        |        |        |        |         /-----Ebrard IV Seigneur De Puiset, Vicount Chartres
         |        |        |        |        |        |         \-----Agnes
         |        |        |        |         \-----Maud De CLERE
         |        |        |        |                  \-----Heloise De ROUCY
         |        |         \-----Maud De LACY
         |        |                 |                           /-----Robert De QUINCEY
         |        |                 |                  /-----Saire De QUINCEY, Earl Of Winchester, MC Suret
         |        |                 |                 |         \-----Orabella
         |        |                 |         /-----Robert De QUINCEY
         |        |                 |        |        |         /-----Sir Robert De BEAUMONT, Earl Of Leicester
         |        |                 |        |         \-----Margaret BEAUMONT
         |        |                 |        |                  \-----Petronilla De GRANTMESNIL
         |        |                  \-----Margaret De QUINCY, Heiress Of Lincoln
         |        |                          |                  /-----Ranulf De GERNON, Earl Of Chester, Vicomte D'Avranches
         |        |                          |         /-----Hugh Of Kevelioc, Earl Of Chester
         |        |                          |        |         \-----Maud De CAEN
         |        |                           \-----Hawise Of Chester, Countess Of Lincoln
         |        |                                   |         /-----Simon De MONTFORT, Count Of Evreux
         |        |                                    \-----Bertrade De MONTFORT
         |        |                                             \-----Maud
          \-----Maud De CLARE
                  |                                             /-----Gerald Of Windsor, Constable Of Pembroke Castl
                  |                                    /-----Maurice FITZ GERALD, Lord Of Lanstephen
                  |                                   |         \-----Nest Of Wales, Princess Of Deheubarth
                  |                           /-----Gerald FITZ MAURICE, Baron Of Offaly
                  |                          |        |         /-----Arnulph De MONTGOMERY
                  |                          |         \-----Alice De MONTGOMERY
                  |                          |                  \-----Lafrocoth
                  |                  /-----Sir Maurice FITZ GERALD, Baron Offaly
                  |                 |        |         /-----Robert De BIRMINGHAM
                  |                 |         \-----Eve De BERMINGHAM
                  |         /-----Maurice FITZ MAURICE FITZ GERALD, Lord Of Offaly
                  |        |         \-----Juliane
                   \-----Julian FITZ MAURICE
                           |                           /-----Maurice Lord of Prendergast
                           |                  /-----Philip De PRENDERGAST
                           |         /-----Gerald De PRENDERGAST
                           |        |        |         /-----Robert De QUENCI, Constable of Leinster
                           |        |         \-----Maude De QUENCI
                           |        |                 |         /-----Richard "Strongbow" De CLARE, Earl Of Pembroke
                           |        |                  \-----(Unk dau) De CLARE
                            \-----Matilda De PRENDERGAST
                                    |                           /-----Walter De BURGH
                                    |                  /-----William De BURGH, Lord of Connaught
                                    |                 |         \-----Alice
                                    |         /-----Richard De BURGH, Lord of Connaught
                                    |        |        |         /-----Domnall Mor O'Brien, King Of Munster
                                    |        |         \-----(Unk Dau) O'BRIEN
                                     \-----Matilda De BURG
                                             |                  /-----Hugh De LACY, Baron Of Weobley
                                             |         /-----Walter De LACY, Baron Of Weobley
                                             |        |         \-----Roheis De MONMOUTH
                                              \-----Egidia (Jill) De LACY
                                                      |         /-----William De BRAOS, Baron Of Bramber
                                                       \-----Margaret De BRAOISE
                                                                \-----Matilda De ST VALERIE De HAIA



Descendants of Thomas De PERCY, Bishop of Norwich
1. Thomas De PERCY, Bishop of Norwich