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


Family:
Children:
  1. Donnchan Cairbreach O'Brien, King Of Thomond Death: 1142
  2. (Unk Dau) O'BRIEN

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]*].
  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 v2p[0-9]*].
  3. Baldwin, Stewart, Donnell O'Brien, king of Thomond. Posting to soc.genealogy.medieval (email list GEN-MEDIEVAL) on 8/29/2001. Subject: Donnell O'Brien, king of Thomond. Available at https://groups.google.com/g/soc.genealogy.medieval/c/6QNgVklU1bw/m/KEwml0_WATkJ. Author address: sbaldw at mindspring dot com. Information from this source tagged as [Ref: Stewart Baldwin SGM 8/29/2001-030404].
  4. Weis, Frederick Lewis, Walter Lee Sheppard, Jr, David Faris, Ancestral Roots of Certain American Colonists who came to America before 1700, 7th Edition, Baltimore: Genealogical Publishing Co, 1992. Information from this source tagged as [Ref: Weis AR7 #[0-9][0-9]*[A-Z]*].

Sources for birth and parent Information
parents:
[Ref: Stewart Baldwin SGM 8/29/2001-030404],
father:
[Ref: Moncreiffe RoyalAnc p16]
Sources for death Information
date:
[Ref: Moncreiffe RoyalAnc p16, Stewart Baldwin SGM 8/29/2001-030404]
Sources with Information about marriage to unknown
child:
[Ref: Moncreiffe RoyalAnc p16, Richardson RoyalAnc v2p14, Stewart Baldwin SGM 8/29/2001-030404, Weis AR7 #177B]
Research Notes:
King of Munster [Ref: Moncreiffe RoyalAnc p16]
King of Thomond [Ref: Stewart Baldwin SGM 8/29/2001-030404]
King of Limerick [Ref: Richardson RoyalAnc v2p14]

last King of Munster [Ref: Moncreiffe RoyalAnc p16]

1192: defeated Anglo-Normans at Thurles [Ref: Moncreiffe RoyalAnc p16]

father-in-law of William de Burgh [Ref: Stewart Baldwin SGM 8/29/2001-030404]



Pedigree of Domnall Mor O'Brien, King Of Munster
                                                                /-----Lachtnae Mac Cuircc
                                                       /-----Lorcan Dal Cais King Of Munster And Thomond
                                              /-----Cennetig Dal Cais King Of Munster And Thomond
                                     /-----Brian Boruma, King Of Cashel And Munster, High
                                    |        |                  /-----Murchad King Of West Connacht
                                    |        |         /-----Aurchad King Of Ui Briuin Or West Connacht
                                    |         \-----Be Bind
                                    |                 |         /-----Crechan
                                    |                  \-----Osnadh
                                    |                           \-----Cianog
                            /-----Tadg Mac Briain
                           |        |         /-----Carrlus Mac AILELLA, King Of Ui Adea Ocba
                           |         \-----Echrad
                   /-----Tairrdelbach Mac TADG, King Of Cashel And Munster, Hi
                  |        |         /-----Gilla Brigte Ua Mael Muaid, King Of Cenel Fiachach
                  |         \-----Mor
          /-----Diarmaid O'Brien, King Of Munster
         |        |                                             /-----Cerball King Of Ossory
         |        |                                    /-----Cellach Mac Cerbaill, King Of Osraige
         |        |                           /-----Donnchad King Of Ossory
         |        |                          |        |         /-----Matudan King Of Ulster
         |        |                          |         \-----Echrad
         |        |                  /-----Gilla Patraic Mac Donnchada, King Of Ossory
         |        |                 |        |                  /-----Cormac Mac Mothla, King Of Dessi
         |        |                 |        |         /-----Faelan Mac Cormac, King Of Dessi
         |        |                 |         \-----Aife
         |        |         /-----Tadc Mac Gilla Patraic
         |         \-----Derbforgaill
 /-----Tairrdelbach O'Brien, King Of Munster
|        |         /-----Ruaidri Na Saide Buide Ua Conchobar, King of Co
|         \-----Mor
Domnall Mor O'Brien, King Of Munster
|                                                               /-----Cellach Mac Cerbaill, King Of Osraige
|                                                      /-----Donnchad King Of Ossory
|                                                     |         \-----Echrad
|                                             /-----Gilla Patraic Mac Donnchada, King Of Ossory
|                                            |        |         /-----Faelan Mac Cormac, King Of Dessi
|                                            |         \-----Aife
|                                    /-----Donnchad King Of Osraige
|                                   |        |                  /-----Godfrey
|                                   |        |         /-----Harold
|                                   |         \-----Mael Maire
|                           /-----Gilla Patraic King Of Osraige
|                  /-----Domnall Mac Gilla Patraic, King of Ossraige
|         /-----Donnchad Balc Mac Gilla Patraic Ruad, King of Ossraig
 \-----Sadb



Descendants of Domnall Mor O'Brien, King Of Munster
1. Domnall Mor O'Brien, King Of Munster m.

2nd generation

2. Donnchan Cairbreach O'Brien, King Of Thomond m.
3. (Unk Dau) O'BRIEN m. William De BURGH, Lord of Connaught
m. William De BURGH, Lord of Connaught father: Walter De BURGH mother: Alice

3rd generation

4. Conor Na Suidane O'Brien, King Of Thomond m.
7. Richard De BURGH, Lord of Connaught m. Egidia (Jill) De LACY
m. Egidia (Jill) De LACY father: Walter De LACY, Baron Of Weobley mother: Margaret De BRAOISE

4th generation

9. Teige Cael-Uisce O'Brien m.
10. Margery De BURGH m. Theobald Le BOTELER
m. Theobald Le BOTELER father: Theobald Le BOTELER mother: Joan Du MARAIS
11. Matilda De BURG m. Gerald De PRENDERGAST
m. Gerald De PRENDERGAST father: Philip De PRENDERGAST mother: Maude De QUENCI
12. William Og De BURG m.
14. (Unk dau) De BURG m. Hamon De VALOYNES
m. Hamon De VALOYNES
16. Walter De BURG, Earl Of Ulster m. Aveline FITZJOHN
m. Aveline FITZJOHN father: Sir John FITZ GEOFFREY mother: Isabel BIGOD

5th generation

17. Turlough King Of Thomond m.
18. Theobald Le BOTELER m. Joan FITZ JOHN
m. Joan FITZ JOHN father: Sir John FITZ GEOFFREY mother: Isabel BIGOD
19. Matilda De PRENDERGAST m1. David FITZ MAURICE m2. Maurice De ROCHFORT m3. Maurice FITZ MAURICE FITZ GERALD, Lord Of Offaly
m. David FITZ MAURICE
m. Maurice De ROCHFORT
m. Maurice FITZ MAURICE FITZ GERALD, Lord Of Offaly father: Sir Maurice FITZ GERALD, Baron Offaly mother: Juliane
22. Egidia De BURGH m. James STEWART, High Steward Of Scotland
m. James STEWART, High Steward Of Scotland father: Alexander STEWART, High Steward Of Scotland mother: Joanna
26. Richard De BURGH, Earl Of Ulster m. Margaret Of Guines
m. Margaret Of Guines father: Arnold III Count Of Guines mother: Alix Of Coucy