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:
Marriage: Children:
  1. Avice MARTIN
  2. John MARTIN
  3. William MARTIN
  4. David MARTIN
  5. Warin MARTIN

Bibliography
  1. Cokayne, George Edward, Complete Peerage of England, Scotland, Ireland, Great Britain, and the United Kingdom, extant, extinct, or dormant, vol 08, Lindley-Moate. London: St Catherine Press, 1932. Reprinted (4 per page) Gloucester: A Sutton, 1982. Available at https://familysearch.org/search/catalog/271412 Information from this source tagged as [Ref: CP VIII [Ap][p0-9].*].
  2. 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
grandfather:
Ralph FITZ WILLIAM [Ref: CP VIII p533, Roberts RD600 p534]
Sources with Information about marriage to Hugh PEVEREL
date:
first marriage of Isabel [Ref: CP VIII p533]
Sources with Information about marriage to Sir Nicholas Fitz MARTIN, Baron Of Blagdon
date:
1259 or 1260 [Ref: CP VIII p534],
names:
[Ref: CP VIII p535],
child:
[Ref: CP VIII p535(d), Roberts RD600 p534]
Research Notes:
granddaughter and coheiress of Ralph FITZWILLIAM of Brompton Ralph and Withycombe [Ref: CP VIII p533]



Pedigree of Isabel FITZ WILLIAM
          /-----Ralph FITZ WILLIAM
 /-----(Unk) FITZ WILLIAM
|        |                                    /-----(Unk) De MOHUN
|        |                           /-----Sir William De MOHUN, Baron Of Dunster
|        |                  /-----William De MOHUN, Earl Of Somerset
|        |                 |         \-----Adeliz
|        |         /-----William De MOHUN, Baron Of Dunster
|        |        |        |                                    /-----Ralph De GANT
|        |        |        |                           /-----Ralph De GANT, Lord Of Aalst
|        |        |        |                  /-----Gilbert De GANT, Baron Of Folkingham
|        |        |        |                 |        |         /-----Frederick I Count Of Luxemburg
|        |        |        |                 |         \-----Gisele Of Luxembourg
|        |        |        |                 |                  \-----Ermentrude Of Kinziggau
|        |        |        |         /-----Walter De GAUNT, Baron Of Folkingham
|        |        |        |        |        |                  /-----Hugh With The Beard De Montfort
|        |        |        |        |        |         /-----Hugh De Montfort, Baron Of Haughley
|        |        |        |        |         \-----Alice De MONTFORT
|        |        |        |        |                 |         /-----Richard De Beaufour
|        |        |        |        |                  \-----Alice Of Beaufour
|        |        |        |        |                           \-----(Dau)
|        |        |         \-----Agnes De GAUNT
|        |        |                 |                           /-----Geoffrey Duke Of Brittany
|        |        |                 |                  /-----Eudes I Count Of Brittany
|        |        |                 |                 |         \-----Hawise Of Normandy
|        |        |                 |         /-----Stephen Count Of Brittany
|        |        |                 |        |        |         /-----Alain Cagnairt Count Of Cornuaille
|        |        |                 |        |         \-----Agnes Of Cornuaille
|        |        |                 |        |                  \-----Judith Of Nantes
|        |        |                  \-----Maud Of Brittany
|        |        |                           \-----Hawise Of Guincamp
|         \-----Yolande De MOHUN
|                 |                                             /-----Ralph II De TOENI, Seigneur Of Tonsi And Conches
|                 |                                    /-----Roger I De TOENI
|                 |                           /-----Ralph III De TOENI, Baron Of Flamstead
|                 |                          |         \-----Godehildie
|                 |                  /-----Ralph IV De TOENI, Baron Of Flamstead
|                 |                 |        |                  /-----Amauri III De MONTFORT
|                 |                 |        |         /-----Simon I De MONTFORT, Seigneur Of Montfort L'Amau
|                 |                 |        |        |         \-----Bertrade De GOMMETZ
|                 |                 |         \-----Isabel De MONTFORT
|                 |                 |                 |         /-----Hugues I Bardoul Lord Of Broyes And Beaufort
|                 |                 |                  \-----Isabel Of Broyes
|                 |                 |                           \-----Alvidis
|                 |         /-----Roger III De TOENI, Baron Of Flamstead
|                 |        |        |                           /-----Beorn
|                 |        |        |                  /-----Sigurd Digera Earl Of Northumbria
|                 |        |        |         /-----Waltheof II Earl Of Huntingdon
|                 |        |        |        |        |         /-----Ealdred Of Bernicia
|                 |        |        |        |         \-----Aelflaed
|                 |        |         \-----Alice Of Northumberland
|                 |        |                 |                  /-----Eustace I Count Of Boulogne
|                 |        |                 |         /-----Lambert Of Boulogne, Count Of Lens
|                 |        |                 |        |         \-----Maud Of Louvain
|                 |        |                  \-----Judith Of Lens
|                 |        |                          |         /-----Robert I The Devil Duke Of Normandy
|                 |        |                           \-----Adelaide Of Normandy
|                 |        |                                    \-----Herleve Of Falaise
|                  \-----Godeheut De TOENI
|                          |                                    /-----Baldwin V Count Of Flanders
|                          |                           /-----Baldwin VI De MONS, Count Of Flanders
|                          |                          |         \-----Adelaide Of France
|                          |                  /-----Baldwin II Count Of Hainault
|                          |                 |        |         /-----Gerhard II Count Of Egisheim
|                          |                 |         \-----Richilde Countess Of Hainault
|                          |                 |                  \-----Berta
|                          |         /-----Baldwin III Count Of Hainault
|                          |        |        |                  /-----Lambert II The Belted Count Of Louvain
|                          |        |        |         /-----Henry II Of Brabant, Count Of Lorraine
|                          |        |        |        |         \-----Oda Of Lorraine
|                          |        |         \-----Ida Of Louvain
|                          |        |                 |         /-----Eberhard Of Betuew And Teisterbant
|                          |        |                  \-----Adelaide Of Betuew
|                           \-----Ida (Gertrude) Of Hainault
|                                   |                           /-----Gerard Flameus Count Of Teirterbant
|                                   |                  /-----Dietrich Flameus Count In The Velux
|                                   |         /-----Gerald I Count Of Guelders And Wassenberg
|                                    \-----Yolande Of Guelders
Isabel FITZ WILLIAM



Descendants of Isabel FITZ WILLIAM
1. Isabel FITZ WILLIAM m1. Hugh PEVEREL m2. Sir Nicholas Fitz MARTIN, Baron Of Blagdon
m. Hugh PEVEREL
m. Sir Nicholas Fitz MARTIN, Baron Of Blagdon father: William Fitz MARTIN, Baron Of Blagdon mother: Avice De TORITON