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Family:
Marriage:
Bibliography
  1. Cokayne, George Edward, Complete Peerage of England, Scotland, Ireland, Great Britain, and the United Kingdom, extant, extinct, or dormant, vol 04 Dacre-Dysart. London: St Catherine Press, 1916. Reprinted (4 per page) Gloucester: A Sutton, 1982. Available at https://familysearch.org/search/catalog/271412 Vol 4 also available at http://archive.org/completepeerageo04byucoka Information from this source tagged as [Ref: CP IV [Ap][p0-9].*].

Sources for birth and parent Information
date:
age abt 14 in 1399/1400 [Ref: CP IV p245],
parents:
[Ref: CP IV p245]
Sources for death Information
date:
bur 10 Aug 1420 [Ref: CP IV p246],
place:
Rouen or Paris [Ref: CP IV p246]
Sources for burial Information
date:
[Ref: CP IV p246],
place:
Church of the Franciscans or that of the Dominicans, Paris [Ref: CP IV p246]
Sources with Information about marriage to Katherine MacCORMICKE
names:
[Ref: CP IV p246]
Research Notes:
5th Earl of Desmond, of Earldom cr 1329 [Ref: CP IV p245]

son and heir of John (Fitz Gerald) Earl of Desmond [Ref: CP IV p245]



Pedigree of Thomas FITZ JOHN, Earl Of Desmond
                                                                /-----Maurice FITZ GERALD, Lord Of Lanstephen
                                                       /-----Thomas FITZ MAURICE
                                                      |         \-----Alice De MONTGOMERY
                                              /-----John FITZ THOMAS
                                             |         \-----Sabine
                                     /-----Morice FITZ JOHN
                                    |        |         /-----Thomas Fitz Anthony
                                    |         \-----Margery
                            /-----Thomas FITZ MORICE
                           |         \-----Maud De BARRY
                   /-----Morice FITZ THOMAS, Earl Of Desmond
                  |        |                                    /-----Maurice FITZROBERT FITZHARDING, Baron Of Berkele
                  |        |                           /-----Thomas De BERKELEY, Baron Of Berkeley
                  |        |                          |         \-----Alice De BERKELEY
                  |        |                  /-----Maurice De BERKELEY, Baron Of Berkeley
                  |        |                 |        |         /-----Sir Ralph De SOMERY, Baron Of Dudley
                  |        |                 |         \-----Joan SOMERY
                  |        |                 |                  \-----Margaret Le GROS
                  |        |         /-----Sir Thomas De BERKELEY, Lord Berkeley
                  |        |        |        |                  /-----John Lackland PLANTAGENET, King Of England
                  |        |        |        |         /-----Richard Fitz Roy, Baron Of Chilham
                  |        |        |        |        |         \-----(Unk Dau)
                  |        |        |         \-----Isabel FITZ ROY
                  |        |        |                 |         /-----Fulbert De DOVER, Baron Of Chilham
                  |        |        |                  \-----Rohese De DOVER
                  |        |        |                           \-----Isabel BRIWERRE
                  |         \-----Margaret BERKELEY
                  |                 |                           /-----William FERRERS, Earl Of Derby
                  |                 |                  /-----William De FERRERS, Earl Of Derby
                  |                 |                 |         \-----Sibyl De BRAOISE
                  |                 |         /-----William De FERRERS, Earl Of Derby
                  |                 |        |        |         /-----Hugh Of Kevelioc, Earl Of Chester
                  |                 |        |         \-----Agnes Of Chester, Lady Of Chartley
                  |                 |        |                  \-----Bertrade De MONTFORT
                  |                  \-----Joan De FERRERS
                  |                          |                  /-----Saire De QUINCEY, Earl Of Winchester, MC Suret
                  |                          |         /-----Roger De QUINCY, Earl Of Winchester
                  |                          |        |         \-----Margaret BEAUMONT
                  |                           \-----Margaret De QUINCEY
                  |                                   |         /-----Alan Lord Of Galloway, Constable Of Scotland
                  |                                    \-----Helen Of Galloway
                  |                                             \-----(Unk Dau) De LACY
          /-----Gerald Fitz Morice, Earl Of Desmond
         |        |                                             /-----Thomas FITZ MAURICE
         |        |                                    /-----Maurice FITZ THOMAS
         |        |                                   |         \-----Sabine
         |        |                           /-----Thomas FITZ MAURICE
         |        |                  /-----Maurice FITZ THOMAS, Lord Kerry
         |        |         /-----Nicholas FITZ MAURICE, Lord Kerry
         |        |        |        |         /-----William FITZ ELIE
         |        |        |         \-----Ellen FITZ WILLIAM
         |         \-----Aveline Fitz Nicholas
         |                 |                                    /-----Conor Na Suidane O'Brien, King Of Thomond
         |                 |                           /-----Teige Cael-Uisce O'Brien
         |                 |                  /-----Turlough King Of Thomond
         |                 |         /-----Connor O'BRIEN, Prince Of Thomond
         |                  \-----Slany O'BRIEN
 /-----John FITZ GERALD, Earl Of Desmond
|        |                                                      /-----Theobald Le BOTELER
|        |                                             /-----Theobald Le BOTELER
|        |                                            |         \-----Joan Du MARAIS
|        |                                    /-----Theobald Le BOTELER
|        |                                   |        |         /-----Richard De BURGH, Lord of Connaught
|        |                                   |         \-----Margery De BURGH
|        |                                   |                  \-----Egidia (Jill) De LACY
|        |                           /-----Edmund Le BOTELER
|        |                          |        |                  /-----Geoffrey FITZ PIERS, Earl Of Essex
|        |                          |        |         /-----Sir John FITZ GEOFFREY
|        |                          |        |        |         \-----Aveline De CLARE
|        |                          |         \-----Joan FITZ JOHN
|        |                          |                 |         /-----Hugh BIGOD, Earl Of Norfolk, MC Surety
|        |                          |                  \-----Isabel BIGOD
|        |                          |                           \-----Maud MARSHALL
|        |                  /-----James BUTLER, Earl Of Ormond
|        |                 |        |                           /-----Sir Maurice FITZ GERALD, Baron Offaly
|        |                 |        |                  /-----Thomas FITZ MAURICE FITZ GERALD
|        |                 |        |                 |         \-----Juliane
|        |                 |        |         /-----John FITZ THOMAS FITZ GERALD, Earl Of Kildare
|        |                 |        |        |        |         /-----Richard De ST MICHAEL, Baron of Reban
|        |                 |        |        |         \-----Rohesia De ST MICHAEL
|        |                 |         \-----Joan FITZ JOHN
|        |                 |                 |         /-----Alexander ROCHE, Baron Of Fermoy
|        |                 |                  \-----Blanche ROCHE
|        |         /-----James BUTLER, Earl Of Ormond
|        |        |        |                                    /-----Humphrey V De BOHUN, Earl Of Hereford And Essex
|        |        |        |                           /-----Humphrey VI De BOHUN
|        |        |        |                          |         \-----Maud D'EU
|        |        |        |                  /-----Humphrey VII De BOHUN, Earl Of Hereford And Essex
|        |        |        |                 |        |         /-----William De BRAIOSE, Baron Of Brecknock Castle
|        |        |        |                 |         \-----Eleanor De BRAIOSE
|        |        |        |                 |                  \-----Eve MARSHALL
|        |        |        |         /-----Humphrey VIII De BOHUN, Earl Of Hereford And Essex
|        |        |        |        |        |                  /-----William De FIENNES
|        |        |        |        |        |         /-----Sir Ingleman FIENNES, K.B., Lord Of Wendover
|        |        |        |        |        |        |         \-----Agnes De DAMMARTIN
|        |        |        |        |         \-----Maud De FIENNES
|        |        |        |        |                  \-----Isabel
|        |        |         \-----Eleanor De BOHUN
|        |        |                 |                           /-----John Lackland PLANTAGENET, King Of England
|        |        |                 |                  /-----Henry III King Of England
|        |        |                 |                 |         \-----Isabel Of Angouleme
|        |        |                 |         /-----Edward I King Of England
|        |        |                 |        |        |         /-----Raymond Berengar IV Count Of Provence And Forcalquier
|        |        |                 |        |         \-----Eleanor Of Provence
|        |        |                 |        |                  \-----Beatrice Of Savoy
|        |        |                  \-----Elizabeth PLANTAGENET
|        |        |                          |                  /-----Alfonso IX King Of Leon
|        |        |                          |         /-----Fernando III The Saint King Of Castile And Leon
|        |        |                          |        |         \-----Berengaria Of Castile
|        |        |                           \-----Eleanor Of Castile
|        |        |                                   |         /-----Simon De DAMMARTIN, Count Of Aumale
|        |        |                                    \-----Joan De DAMMARTIN
|        |        |                                             \-----Marie Countess Of Ponthieu
|         \-----Alianore Le BOTILLER
|                 |                                             /-----Thomas DARCY, Baron Of Nocton
|                 |                                    /-----Norman DARCY, Baron Of Nocton
|                 |                                   |         \-----Joan
|                 |                           /-----Sir Philip DARCY, Baron Of Nocton
|                 |                          |         \-----Agnes
|                 |                  /-----Sir Roger DARCY
|                 |                 |        |                  /-----William II BERTRAM, Baron Of Mitford
|                 |                 |        |         /-----Roger II BERTRAM, Baron Of Mitford
|                 |                 |        |        |         \-----Alice De UMFREFILLE
|                 |                 |         \-----Isabel BERTRAM
|                 |                 |                 |         /-----Sir Henry De PERCY
|                 |                 |                  \-----Agnes
|                 |                 |                           \-----Isabel De BRUS
|                 |         /-----Sir John DARCY, Lord Darcy
|                 |        |        |                  /-----Sir Gilbert D'ATON
|                 |        |        |         /-----William D'ATON
|                 |        |        |        |        |         /-----Warin De VESCI
|                 |        |        |        |         \-----Margaret VESCI
|                 |        |        |        |                  \-----Matilda De WELLOM
|                 |        |         \-----Isabel D'ATON
|                  \-----Elizabeth DARCY
|                          |                                    /-----William De BURGH, Lord of Connaught
|                          |                           /-----Richard De BURGH, Lord of Connaught
|                          |                          |         \-----(Unk Dau) O'BRIEN
|                          |                  /-----Walter De BURG, Earl Of Ulster
|                          |                 |        |         /-----Walter De LACY, Baron Of Weobley
|                          |                 |         \-----Egidia (Jill) De LACY
|                          |                 |                  \-----Margaret De BRAOISE
|                          |         /-----Richard De BURGH, Earl Of Ulster
|                          |        |        |                  /-----Geoffrey FITZ PIERS, Earl Of Essex
|                          |        |        |         /-----Sir John FITZ GEOFFREY
|                          |        |        |        |         \-----Aveline De CLARE
|                          |        |         \-----Aveline FITZJOHN
|                          |        |                 |         /-----Hugh BIGOD, Earl Of Norfolk, MC Surety
|                          |        |                  \-----Isabel BIGOD
|                          |        |                           \-----Maud MARSHALL
|                           \-----Joan De BURGH
|                                   |                           /-----Arnold II Count Of Guines
|                                   |                  /-----Baldwin III Count Of Guines
|                                   |                 |         \-----Beatrix De Bourbourg
|                                   |         /-----Arnold III Count Of Guines
|                                   |        |        |         /-----William De FIENNES
|                                   |        |         \-----Mahaut Fiennes
|                                   |        |                  \-----Agnes De DAMMARTIN
|                                    \-----Margaret Of Guines
|                                            |                  /-----Ralph I Sire De COUCY
|                                            |         /-----Enguerrand III Lord Of Coucy
|                                            |        |         \-----Adelaide Of Dreux
|                                             \-----Alix Of Coucy
|                                                     |         /-----John Seigneur De Montmirel
|                                                      \-----Mary Of Montmirail
|                                                               \-----Helvide Of Dampierre
Thomas FITZ JOHN, Earl Of Desmond
 \-----Mary



Descendants of Thomas FITZ JOHN, Earl Of Desmond
1. Thomas FITZ JOHN, Earl Of Desmond m. Katherine MacCORMICKE
m. Katherine MacCORMICKE father: William MacCORMICKE