Genealogy of the Marshall Family,
including Medieval and Ancient Lines

Updated: 01-07-2023.

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 may be downloaded here.

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


Individual Page


Family:
Children:
  1. Mahon O'Brien, King Of Thomond
  2. Turlogh Bog O'Brien, King Of Thomond Death: 1462

Bibliography
  1. Moncreiffe, Sir Ian of that Ilk, Royal Highness: Ancestors of the Royal Child. London: Hamish Hamilton, 1982. NYPL ARF 83-3293. Information from this source tagged as [Ref: Moncreiffe RoyalAnc p[0-9]*].

Sources for birth and parent Information
father:
[Ref: Moncreiffe RoyalAnc p16]
Sources for death Information
date:
[Ref: Moncreiffe RoyalAnc p16]
Sources with Information about marriage to unknown
child:
[Ref: Moncreiffe RoyalAnc p16]
Research Notes:
King of Thomond [Ref: Moncreiffe RoyalAnc p16]



Pedigree of Brian O'Brien, King Of Thomond
                                                                /-----Tairrdelbach O'Brien, King Of Munster
                                                       /-----Domnall Mor O'Brien, King Of Munster
                                                      |         \-----Sadb
                                              /-----Donnchan Cairbreach O'Brien, King Of Thomond
                                     /-----Conor Na Suidane O'Brien, King Of Thomond
                            /-----Teige Cael-Uisce O'Brien
                   /-----Turlough King Of Thomond
          /-----Muirchertach O'Brien, King Of Thomond
 /-----Mathgamain Moinnroy O'Brien, King Of Thomond
Brian O'Brien, King Of Thomond



Descendants of Brian O'Brien, King Of Thomond
1. Brian O'Brien, King Of Thomond m.

2nd generation

3. Turlogh Bog O'Brien, King Of Thomond m.

3rd generation

4. Teige O'BRIEN, Prince Of Thomond m.
5. Raynalda O'BRIEN m. John BUTLER, Earl Of Ormond
m. John BUTLER, Earl Of Ormond father: James BUTLER, Earl Of Ormond mother: Joan BEAUCHAMP

4th generation

6. Margaret O'BRIEN m. James FITZ GERALD, Earl Of Desmond
m. James FITZ GERALD, Earl Of Desmond father: Thomas FITZ GERALD, Earl Of Desmond mother: Ellice BARRY
7. Turlogh Don O'BRIEN, Prince Of Thomond m. Raghnailt MACNAMARA
m. Raghnailt MACNAMARA father: John MACNAMARA

5th generation

11. Joan FITZ GERALD m. Maurice ROCHE, Lord Roche Of Fermoy
m. Maurice ROCHE, Lord Roche Of Fermoy father: David ROCHE, Lord Roche Of Fermoy mother: Joan De BURGH
12. Conor O'BRIEN m. Annabell De BURGH
m. Annabell De BURGH father: Ulick De BURGH
14. Murrough O'BRIEN, Prince of Thomond, Earl of Tho m. Eleanor FITZGERALD
m. Eleanor FITZGERALD father: Sir Thomas FITZGERALD