Genealogy of the Marshall Family,
including Medieval and Ancient Lines

Updated: 09-30-2024.

Submitted and Maintained by Bill Marshall, bill.marshall@verizon.net.

Additions and corrections appreciated (especially with sources). My current list of sources is here. Homepage here.

Index of Medieval and Ancient Lines is here, notable people here, and Gedcom available to be downloaded.

Index of Modern Lines (immigrants to America and their descendants) is here, notable people here, and Gedcom here.

Individual Page

Person Info

Name: Henry O'BRIEN, Earl Of Thomond
Sex: M
Birth: Abt 1588 ^b
Death: Abt 22 Apr 1639 ^d
Burial: Limerick Cath ^u

Parents:

Father:
Donough O'BRIEN, Earl Of Thomond Birth: 1 Death: 5 Sep 1624 in Clonmell

Mother:

Elizabeth FITZGERALD Death: 12 Jan 1617

Family:
Marriage:

Mary BRERETON on 13 Jul 1608 at Brereton, co Chester .^m1
Mary BRERETON Death: Apr 1640

Children:

Elizabeth O'BRIEN Death: Before 30 Jun 1659
Mary O'BRIEN Birth: 1
Margaret O'BRIEN Birth: 2 Death: Abt 26 Jul 1681
Anne O'BRIEN Birth: 4

Bibliography

Cokayne, George Edward, Complete Peerage of England, Scotland, Ireland, Great Britain, and the United Kingdom, extant, extinct, or dormant, vol 03 Canonteigh-Cutts. London: St Catherine Press, 1913. Reprinted (4 per page) Gloucester: A Sutton, 1982. Available at https://familysearch.org/search/catalog/271412 Vol 3 also available at http://archive.org/completepeerageo03coka Information from this source tagged as [Ref: CP III [Ap][p0-9].*].
Cokayne, George Edward, Complete Peerage of England, Scotland, Ireland, Great Britain, and the United Kingdom, extant, extinct, or dormant, vol 05 E-Goojerat. London: St Catherine Press, 1926. Reprinted (4 per page) Gloucester: A Sutton, 1982. Available at https://familysearch.org/search/catalog/271412 Information from this source tagged as [Ref: CP V [Ap][p0-9].*].
Cokayne, George Edward, Complete Peerage of England, Scotland, Ireland, Great Britain, and the United Kingdom, extant, extinct, or dormant, vol 12-1, Skelmersdale-Towton. London: St Catherine Press, 1953. Reprinted (4 per page) Gloucester: A Sutton, 1982. Available at https://familysearch.org/search/catalog/271412 Information from this source tagged as [Ref: CP XII/1 [Ap][p0-9].*].
Cokayne, George Edward, Complete Peerage of England, Scotland, Ireland, Great Britain, and the United Kingdom, extant, extinct, or dormant, vol 12-2, Tracton-Zz. London: St Catherine Press, 1959. Reprinted (4 per page) Gloucester: A Sutton, 1982. Available at https://familysearch.org/search/catalog/271412 Information from this source tagged as [Ref: CP XII/2 [Ap][p0-9].*].
Roberts, Gary Boyd, The Royal Descents of 600 Immigrants to the American Colonies or the United States: who were themselves notable or left descendants notable in American history, with a 2008 Addendum, Coda, and Final Additions. Baltimore, MD: Gen Pub Co, 2008. NYPL APK 08-4216. Information from this source tagged as [Ref: Roberts RD600 p[0-9]*].

Sources for birth and parent Information

date:: abt 1588 [Ref: CP XII/1 p707],
parents:: [Ref: CP XII/1 p707]

Sources for death Information

date:: shortly before 22 Apr 1639 [Ref: CP XII/1 p708]

Sources for burial Information

place:: [Ref: CP XII/1 p708]

Sources with Information about marriage to Mary BRERETON

date:: [Ref: CP XII/1 p707],
place:: [Ref: CP XII/1 p707],
child:: [Ref: CP III p562, CP V p635, CP XII/1 p709, CP XII/2 p492, CP XII/2 p862, Roberts RD600 p54]

Research Notes:
4th Earl of Thomond, of Earldom cr 1551 [Ref: CP XII/1 p707]
4th Earl of Thomond [Ref: Roberts RD600 p54]
5th Earl of Thomond [Ref: CP III p562, CP V p635]

heir of his father [Ref: CP XII/1 p707]

Pedigree of Henry O'BRIEN, Earl Of Thomond
                                                                /-----Brian O'Brien, King Of Thomond
                                                       /-----Turlogh Bog O'Brien, King Of Thomond
                                              /-----Teige O'BRIEN, Prince Of Thomond
                                     /-----Turlogh Don O'BRIEN, Prince Of Thomond
                            /-----Conor O'BRIEN
                           |        |         /-----John MACNAMARA
                           |         \-----Raghnailt MACNAMARA
                   /-----Donough O'BRIEN, Earl Of Thomond
                  |        |         /-----Ulick De BURGH
                  |         \-----Annabell De BURGH
          /-----Conor O'BRIEN, Earl Of Thomond
         |        |                                             /-----James BUTLER, Earl Of Ormond
         |        |                                    /-----Sir Richard BUTLER
         |        |                                   |         \-----Anne WELLES
         |        |                           /-----Sir Edmund BUTLER
         |        |                          |        |         /-----Gildas O'REILLY
         |        |                          |         \-----Catherine O'REILLY
         |        |                  /-----Sir James BUTLER
         |        |                 |        |                  /-----Teige O'CARROLL
         |        |                 |        |         /-----Melroona O'CARROLL
         |        |                 |        |        |         \-----Joan BUTLER
         |        |                 |         \-----Shile O'CARROLL
         |        |                 |                  \-----Bibiana O'DEMPSEY
         |        |         /-----Sir Piers BUTLER, Earl Of Ormond
         |        |        |        |         /-----Donald Reagh MacMorrogh KAVANAGH
         |        |        |         \-----Sabine KAVANAGH
         |         \-----Ellen BUTLER
         |                 |                                    /-----John FITZ GERALD, Earl Of Kildare
         |                 |                           /-----John Cam FITZ GERALD
         |                 |                          |         \-----Margaret De La HERNE
         |                 |                  /-----Thomas FITZ GERALD, Earl Of Kildare
         |                 |         /-----Gerald FITZGERALD, K.G., Earl Of Kildare
         |                 |        |        |                  /-----Gerald Fitz Morice, Earl Of Desmond
         |                 |        |        |         /-----James FITZ GERALD, Earl Of Desmond
         |                 |        |        |        |         \-----Alianore Le BOTILLER
         |                 |        |         \-----Joan FITZ GERALD
         |                 |        |                 |         /-----Ulick Mac RICHARD BURK
         |                 |        |                  \-----Mary Mac RICHARD BURK
         |                  \-----Margaret FITZGERALD
         |                          |                  /-----Sir Edward FITZEUSTACE
         |                          |         /-----Rowland FITZEUSTACE, Baron Portlester
         |                           \-----Alison FITZEUSTACE
         |                                    \-----Jenet BELLEW
/-----Donough O'BRIEN, Earl Of Thomond
|        |         /-----Turlogh MAC-T-BRIEN-ARA
|         \-----Ownye
Henry O'BRIEN, Earl Of Thomond
|                                                               /-----Maurice FITZ THOMAS FITZ GERALD, Earl Of Kildare
|                                                      /-----John FITZ GERALD, Earl Of Kildare
|                                                     |         \-----Elizabeth De BURGHERSH
|                                             /-----John Cam FITZ GERALD
|                                            |         \-----Margaret De La HERNE
|                                    /-----Thomas FITZ GERALD, Earl Of Kildare
|                           /-----Gerald FITZGERALD, K.G., Earl Of Kildare
|                          |        |                           /-----Morice FITZ THOMAS, Earl Of Desmond
|                          |        |                  /-----Gerald Fitz Morice, Earl Of Desmond
|                          |        |                 |         \-----Aveline Fitz Nicholas
|                          |        |         /-----James FITZ GERALD, Earl Of Desmond
|                          |        |        |        |         /-----James BUTLER, Earl Of Ormond
|                          |        |        |         \-----Alianore Le BOTILLER
|                          |        |        |                  \-----Elizabeth DARCY
|                          |         \-----Joan FITZ GERALD
|                          |                 |         /-----Ulick Mac RICHARD BURK
|                          |                  \-----Mary Mac RICHARD BURK
|                  /-----Gerald FITZGERALD, Earl Of Kildare
|                 |        |                  /-----Sir Edward FITZEUSTACE
|                 |        |         /-----Rowland FITZEUSTACE, Baron Portlester
|                 |         \-----Alison FITZEUSTACE
|                 |                  \-----Jenet BELLEW
|         /-----Gerald FITZGERALD, Earl Of Kildare
|        |        |                                             /-----Sir Reynold De GREY, Lord Grey Of Ruthin
|        |        |                                    /-----Reynold De GREY, Lord Grey Of Ruthin
|        |        |                                   |         \-----Alinore LESTRANGE
|        |        |                           /-----Edward De GREY, Lord Ferrers Of Groby
|        |        |                          |        |         /-----Sir William ASTLEY, Lord Astley
|        |        |                          |         \-----Joan ASTELEY
|        |        |                          |                  \-----Joan WILLOUGHBY
|        |        |                  /-----Sir John GREY
|        |        |                 |        |                  /-----William De FERRERS, Lord Ferrers Of Groby
|        |        |                 |        |         /-----Sir Henry FERRERS
|        |        |                 |        |        |         \-----Philippa De CLIFFORD
|        |        |                 |         \-----Elizabeth FERRERS, Lady Ferrers Of Groby
|        |        |                 |                 |         /-----Sir Thomas MOWBRAY, K.G., Duke Of Norfolk
|        |        |                 |                  \-----Isabel MOWBRAY
|        |        |                 |                           \-----Elizabeth FITZ ALAN
|        |        |         /-----Thomas GREY, K.G., Marquess of Dorset
|        |        |        |        |                           /-----Sir John De WYDEVILLE
|        |        |        |        |                  /-----Richard De WYDEVILLE
|        |        |        |        |                 |         \-----Isabel GOBION
|        |        |        |        |         /-----Sir Richard WYDVILLE, K.G., Earl of Rivers
|        |        |        |        |        |        |         /-----Thomas BEDLISGATE
|        |        |        |        |        |         \-----Joan BEDLISGATE
|        |        |        |        |        |                  \-----Joan BEAUCHAMP
|        |        |        |         \-----Elizabeth WYDVILLE
|        |        |        |                 |                  /-----Jean II Count Of Brienne And Conversano
|        |        |        |                 |         /-----Peter Of Luxemburg, Count Of St. Pol
|        |        |        |                 |        |         \-----Marguerite De Enghien
|        |        |        |                  \-----Jacquetta Of St.Pol
|        |        |        |                          |         /-----Francis De Baux, Duke Of Andria
|        |        |        |                           \-----Margaret Of Andria
|        |        |        |                                    \-----Sveva ORSINI
|        |         \-----Elizabeth GREY
|        |                 |                                    /-----Sir John BONVYLE
|        |                 |                           /-----William BONVILLE, K.G., Lord Bonville
|        |                 |                          |         \-----Elizabeth FITZ ROGER
|        |                 |                  /-----William BONVILLE
|        |                 |                 |        |         /-----Reynold De GREY, Lord Grey Of Ruthin
|        |                 |                 |         \-----Margaret GREY
|        |                 |                 |                  \-----Margaret De ROOS
|        |                 |         /-----William BONVILLE, Lord Harrington
|        |                 |        |        |                  /-----Sir Robert HARINGTON, Lord Harington
|        |                 |        |        |         /-----William HARINGTON, Lord Harington
|        |                 |        |        |        |         \-----Isabel LORING
|        |                 |        |         \-----Elizabeth HARINGTON
|        |                 |        |                 |         /-----Sir John HILL
|        |                 |        |                  \-----Margaret HILL
|        |                 |        |                           \-----Maud DAUBENEY
|        |                  \-----Cicely BONVILLE, Baroness Harrington And Bonvil
|        |                          |                           /-----John De NEVILL, K.G. Lord Neville Of Raby
|        |                          |                  /-----Sir Ralph De NEVILLE, K.G., Earl Of Westmoreland
|        |                          |                 |         \-----Maud PERCY
|        |                          |         /-----Sir Richard De NEVILLE, K.G., Earl Of Salisbury
|        |                          |        |        |         /-----John Of Gaunt K.G., Duke of Lancaster
|        |                          |        |         \-----Joan De BEAUFORT
|        |                          |        |                  \-----Katharine Of Hainault
|        |                           \-----Katherine NEVILLE
|        |                                   |                  /-----John De MONTAGU, K.G., Earl Of Salisbury
|        |                                   |         /-----Sir Thomas MONTAGU, K.G., Earl Of Salisbury
|        |                                   |        |         \-----Maud FRAUNCEYS
|        |                                    \-----Alice MONTAGU, Countess Of Salisbury
|        |                                            |         /-----Sir Thomas HOLLAND, K.G., Earl Of Kent
|        |                                             \-----Eleanor De HOLAND
|        |                                                      \-----Alice FITZALAN
\-----Elizabeth FITZGERALD
         |                                    /-----Sir Richard BROWNE
         |                           /-----Sir Thomas BROWNE
         |                  /-----Sir Anthony BROWNE
         |                 |        |                           /-----Sir John FITZ ALAN, Lord Arundel
         |                 |        |                  /-----Sir John FITZ ALAN, Lord Arundel
         |                 |        |                 |         \-----Eleanor MAUTRAVERS, Baroness Mautravers
         |                 |        |         /-----Sir Thomas ARUNDEL
         |                 |        |        |        |         /-----Sir Edward DESPENSER, K.G., Lord Of Glamorgan
         |                 |        |        |         \-----Elizabeth DESPENSER
         |                 |        |        |                  \-----Elizabeth De BURGHERSH, Baroness Burghersh
         |                 |         \-----Eleanor ARUNDEL
         |                 |                 |         /-----Henry MOYNS
         |                 |                  \-----Joan MOYNS
         |         /-----Sir Anthony BROWNE, K.G.
         |        |        |                                    /-----John De NEVILL, K.G. Lord Neville Of Raby
         |        |        |                           /-----Sir Ralph De NEVILLE, K.G., Earl Of Westmoreland
         |        |        |                          |         \-----Maud PERCY
         |        |        |                  /-----Sir Richard De NEVILLE, K.G., Earl Of Salisbury
         |        |        |                 |        |         /-----John Of Gaunt K.G., Duke of Lancaster
         |        |        |                 |         \-----Joan De BEAUFORT
         |        |        |                 |                  \-----Katharine Of Hainault
         |        |        |         /-----John De NEVILLE, K.G., Marquess of Montagu
         |        |        |        |        |                  /-----John De MONTAGU, K.G., Earl Of Salisbury
         |        |        |        |        |         /-----Sir Thomas MONTAGU, K.G., Earl Of Salisbury
         |        |        |        |        |        |         \-----Maud FRAUNCEYS
         |        |        |        |         \-----Alice MONTAGU, Countess Of Salisbury
         |        |        |        |                 |         /-----Sir Thomas HOLLAND, K.G., Earl Of Kent
         |        |        |        |                  \-----Eleanor De HOLAND
         |        |        |        |                           \-----Alice FITZALAN
         |        |         \-----Lucy NEVILLE
         |        |                 |                           /-----Sir John INGOLDTHORPE
         |        |                 |                  /-----Thomas INGOLDTHORPE
         |        |                 |                 |         \-----Elizabeth BURGH
         |        |                 |         /-----Sir Edmund INGOLDTHORPE
         |        |                 |        |        |         /-----Sir Walter De La POLE
         |        |                 |        |         \-----Margaret De La POLE
         |        |                 |        |                  \-----Elizabeth BRADESTON
         |        |                  \-----Isabel INGOLDTHORPE
         |        |                          |                  /-----Sir Payn TYBETOT
         |        |                          |         /-----Sir John TIPTOFT, Lord Tiptoft
         |        |                          |        |         \-----Agnes WROTH
         |        |                           \-----Joan TIPTOFT
         |        |                                   |         /-----Sir Edward CHERLETON, K.G., Lord Cherleton
         |        |                                    \-----Joyce CHERLETON
         |        |                                             \-----Eleanor HOLLAND
          \-----Mable BROWNE
                  |                                             /-----John De GAUGE
                  |                                    /-----John GAUGE
                  |                           /-----Sir John GAGE
                  |                          |        |         /-----John SUDGROVE
                  |                          |         \-----Joan SUDGROVE
                  |                  /-----William GAGE
                  |                 |        |                  /-----Sir Philip St CLAIR
                  |                 |        |         /-----Thomas St. CLAIR
                  |                 |        |        |         \-----Margaret De LOUVAIN
                  |                 |         \-----Alianore St. CLAIR
                  |                 |                 |         /-----Sir William De HOO
                  |                 |                  \-----Margaret HOO
                  |                 |                           \-----Eleanor WINGFIELD
                  |         /-----Sir John GAGE, K.G.
                  |        |        |         /-----Bartholomew BOLNEY
                  |        |         \-----Agnes BOLNEY
                  |        |                  \-----Eleanor
                   \-----Alice GAGE
                           |                                    /-----William GUILDFORD
                           |                           /-----Edward GUILDFORD
                           |                          |         \-----Joan De HALDEN
                           |                  /-----Sir John GUILFORD
                           |                 |         \-----Julian De PITTLESDEN
                           |         /-----Sir Richard GUILFORD, K.G.
                           |        |        |                  /-----John WALLER
                           |        |        |         /-----Richard WALLER
                           |        |        |        |         \-----Margaret LANDSDALE
                           |        |         \-----Alice WALLER
                           |        |                  \-----Silvia GULBY
                            \-----Philippe GUILFORD
                                    |         /-----John PIMPE
                                     \-----Anne PIMPE

Descendants of Henry O'BRIEN, Earl Of Thomond

1. Henry O'BRIEN, Earl Of Thomond m. Mary BRERETON

m. Mary BRERETON father: William BRERETON, Lord Brereton mother: Margaret SAVAGE

2+ Elizabeth O'BRIEN m1. Dutton GERARD, Lord Gerard m2. Philip WENMAN, Viscount Wenman of Tuam

3 Mary O'BRIEN m1. Charles COKAYNE, Viscount Cullen m2. George BLOUNT

4 Margaret O'BRIEN m. Edward SOMERSET, Marquess Of Worcester; Edward SOMERSET, Marquess Of Worcester father: Sir Henry SOMERSET, Marquess Of Worcester mother: Anne RUSSELL

5+ Anne O'BRIEN m. Henry O'BRIEN, Earl Of Thomond

2nd generation

2. Elizabeth O'BRIEN m1. Dutton GERARD, Lord Gerard m2. Philip WENMAN, Viscount Wenman of Tuam

m. Dutton GERARD, Lord Gerard father: Gilbert GERARD, Lord Gerard mother: Eleanor DUTTON

6 Elizabeth GERRARD m. William SPENCER

m. Philip WENMAN, Viscount Wenman of Tuam father: Thomas WENMAN, Viscount Wenman of Tuam mother: Margaret HAMPDEN

5. Anne O'BRIEN m. Henry O'BRIEN, Earl Of Thomond

m. Henry O'BRIEN, Earl Of Thomond father: Barnabas O'BRIEN, Earl Of Thomond mother: Mary FERMOR

7+ Henry O'BRIEN, Lord Ibrackan m. Catherine STUART, Baroness Clifton

3rd generation

7. Henry O'BRIEN, Lord Ibrackan m. Catherine STUART, Baroness Clifton

m. Catherine STUART, Baroness Clifton father: George STUART, Lord of Aubigny mother: Katherine HOWARD

8 Mary O'BRIEN m. John FITZGERALD, Earl Of Kildare; John FITZGERALD, Earl Of Kildare father: Wentworth FITZGERALD, Earl Of Kildare mother: Elizabeth HOLLES

9 Catherine O'BRIEN, Baroness Clifton m. Edward HYDE, Earl Of Clarendon