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. Brian O'Brien, King Of Thomond Death: 1399

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 Mathgamain Moinnroy O'Brien, King Of Thomond
                                                                /-----Diarmaid O'Brien, King Of Munster
                                                       /-----Tairrdelbach O'Brien, King Of Munster
                                                      |         \-----Mor
                                              /-----Domnall Mor O'Brien, King Of Munster
                                             |        |         /-----Donnchad Balc Mac Gilla Patraic Ruad, King of Ossraig
                                             |         \-----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



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

2nd generation

2. Brian O'Brien, King Of Thomond m.

3rd generation

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

4th generation

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

5th generation

7. 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
8. Turlogh Don O'BRIEN, Prince Of Thomond m. Raghnailt MACNAMARA
m. Raghnailt MACNAMARA father: John MACNAMARA