Genealogy of the Marshall Family,
including Medieval and Ancient Lines

Updated: 01-20-2025.

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:
Marriage: Children:
  1. William FITZ WILLIAM, Baron Of Naas Death: Abt 23 Mar 1227

Bibliography
  1. Burke, Sir John Bernard, Genealogical and Heraldic History of the Peerage Baronetage and Knightage. 99th edition. London: Burke's Peerage, 1949. Available at http://archive.org/details/burkesgenealogic1949unse. Information from this source tagged as [Ref: Burke Peerage [cx0-9]*].
  2. Cokayne, George Edward, Complete Peerage of England, Scotland, Ireland, Great Britain, and the United Kingdom, extant, extinct, or dormant, vol 07 Hussee-Lincolnshire. London: St Catherine Press, 1929. Reprinted (4 per page) Gloucester: A Sutton, 1982. Available at https://familysearch.org/search/catalog/271412 Information from this source tagged as [Ref: CP VII [Ap][p0-9].*].
  3. Cokayne, George Edward, Complete Peerage of England, Scotland, Ireland, Great Britain, and the United Kingdom, extant, extinct, or dormant, vol 10, Oakham-Richmond. London: St Catherine Press, 1945. Reprinted (4 per page) Gloucester: A Sutton, 1982. Available at https://familysearch.org/search/catalog/271412 Information from this source tagged as [Ref: CP X [Ap][p0-9].*].
  4. 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 v4p[0-9]*].

Sources for birth and parent Information
parents:
[Ref: Burke Peerage p1200, CP VII p200],
father:
[Ref: CP X AppH p103, CP X p12(f)]
Sources for death Information
date:
abt 1199 [Ref: CP VII p200]
before abt Sep 1199 [Ref: Richardson RoyalAnc v4p339]
Sources with Information about marriage to Aline De CLARE
date:
[Ref: CP X AppH p103, Richardson RoyalAnc v4p339],
child:
[Ref: CP VII p200, Richardson RoyalAnc v4p339, Richardson RoyalAnc v4p39]
Research Notes:
1st Baron of Naas [Ref: Burke Peerage p1200, CP VII p200]
Baron of Naas, co Kildare [Ref: Richardson RoyalAnc v4p339, Richardson RoyalAnc v4p39]

1185: confirmed in his lands in Offelan [Ref: Burke Peerage p1200]



Pedigree of William FITZ MAURICE, Baron Of Naas
                                              /-----Cosmus Duke Of Florence
                                     /-----Otterus Baron Of Gherardini Of Florence
                            /-----Otho GERALDINO, Baron Of Windsor
                   /-----Walter FITZ OTHO, Baron Of Eton
          /-----Gerald Of Windsor, Constable Of Pembroke Castl
         |         \-----Beatrice
 /-----Maurice FITZ GERALD, Lord Of Lanstephen
|        |         /-----Rhys Ap Tudor Mawr Prince Of South Wales
|         \-----Nest Of Wales, Princess Of Deheubarth
|                 |         /-----Rhiwallon Ap Cynfn Of Powys
|                  \-----Gladys Of Powys
William FITZ MAURICE, Baron Of Naas
|                                    /-----Hugh De Montgomery
|                           /-----Roger De Montgomery, Seigneur Of Montgomery
|                          |         \-----Josceline
|                          |                 |         /-----(Unk) Forquelar Of Cirques
|                          |                  \-----Senfrie
|                  /-----Roger De Montgomery, Earl Of Shrewsbury
|                 |         \-----Emma
|         /-----Arnulph De MONTGOMERY
|        |        |                                    /-----Yves De BELLEME, Seigneur De Belleme
|        |        |                           /-----Guilleume Lord of Belleme
|        |        |                          |        |         /-----(Unk)
|        |        |                          |         \-----Godehaut
|        |        |                  /-----William I Count Of Alencon And Bellasme
|        |        |                 |         \-----Mathilda Dame De Conde-Sur-Noireau
|        |        |         /-----William II TALVAS
|        |        |        |         \-----Mathilde
|        |         \-----Mabel De Belesme
|        |                 |         /-----Arnulf
|        |                  \-----Hildeburg
 \-----Alice De MONTGOMERY
         |                                                      /-----Lorcan Dal Cais King Of Munster And Thomond
         |                                             /-----Cennetig Dal Cais King Of Munster And Thomond
         |                                    /-----Brian Boruma, King Of Cashel And Munster, High
         |                                   |        |         /-----Aurchad King Of Ui Briuin Or West Connacht
         |                                   |         \-----Be Bind
         |                                   |                  \-----Osnadh
         |                           /-----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
         |         /-----Muirchertach Ua BRIAIN, High King Of Ireland
         |        |        |                                    /-----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
         |        |        |         /-----Tadc Mac Gilla Patraic
         |        |         \-----Derbforgaill
          \-----Lafrocoth



Descendants of William FITZ MAURICE, Baron Of Naas
1. William FITZ MAURICE, Baron Of Naas m. Aline De CLARE
m. Aline De CLARE father: Richard "Strongbow" De CLARE, Earl Of Pembroke

2nd generation

2. William FITZ WILLIAM, Baron Of Naas m. Maud De PONT De L'ARCHE
m. Maud De PONT De L'ARCHE father: Robert De PONT De L'ARCHE mother: Maud MARSHALL