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. Gruffudd
  2. Cynan

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. Reed, Paul C., The hitherto unknown marriages of Llywelyn of North Wales, parts 1/2/3/4/5. Posting to soc.genealogy.medieval (email list GEN-MEDIEVAL) on 10/20/1999. Subject: The hitherto unknown marriages of Llywelyn of North Wales. Available at https://groups.google.com/g/soc.genealogy.medieval/c/XGUtYFGepPA/m/HDMNNlTqqdIJ, https://groups.google.com/g/soc.genealogy.medieval/c/XGUtYFGepPA/m/fCtJ5tk7saUJ, https://groups.google.com/g/soc.genealogy.medieval/c/XGUtYFGepPA/m/byVTRTB5UZEJ, https://groups.google.com/g/soc.genealogy.medieval/c/XGUtYFGepPA/m/l_YHoSzKm_UJ, and https://groups.google.com/g/soc.genealogy.medieval/c/XGUtYFGepPA/m/hrspnnQGOEAJ. Author address: reedpcgen at aol dot com. Information from this source tagged as [Ref: Paul Reed SGM 10/20/1999].

Sources for birth and parent Information
father:
[Ref: Burke Peerage p2184, Paul Reed SGM 10/20/1999],
name:
Agnes [Ref: Burke Peerage p2184]
Sources with Information about marriage to Rhodri Ap OWAIN FWYNEDD Prince Of Gwynedd
date:
first marriage of Rhodri [Ref: Paul Reed SGM 10/20/1999],
names:
[Ref: Burke Peerage p2184],
child:
[Ref: Paul Reed SGM 10/20/1999]
Research Notes:
1188: Rhodri was chastised for his marriage to his cousin, the daughter of Rhys ap Gruffydd, which fell within the prohibited degrees. This indicates Gwenllian was still alive [Ref: Paul Reed SGM 10/20/1999]



Pedigree of Gwenllian Ferch Arglwydd Rhys
          /-----Gruffudd AP IVOR BACH
 /-----Rhys AP GRUFFUDD, Prince Of South Wales
|        |                                                      /-----Richard I The Fearless Duke Of Normandy
|        |                                             /-----Richard II The Good Duke Of Normandy
|        |                                            |         \-----Gunnora
|        |                                    /-----Robert I The Devil Duke Of Normandy
|        |                                   |        |         /-----Conan I Duke Of Brittany
|        |                                   |         \-----Judith Of Brittany
|        |                                   |                  \-----Ermengarde Of Anjou
|        |                           /-----William The Conqueror King Of England
|        |                          |        |         /-----Fulbert Of Falaise
|        |                          |         \-----Herleve Of Falaise
|        |                          |                  \-----Duxia
|        |                  /-----Henry I Beauclerc King Of England
|        |                 |        |                           /-----Arnold II The Young Count Of Flanders
|        |                 |        |                  /-----Baldwin IV The Bearded Count Of Flanders
|        |                 |        |                 |         \-----Rosela Of Italy
|        |                 |        |         /-----Baldwin V Count Of Flanders
|        |                 |        |        |        |         /-----Frederick I Count Of Luxemburg
|        |                 |        |        |         \-----Ogive Of Luxembourg
|        |                 |        |        |                  \-----Ermentrude Of Kinziggau
|        |                 |         \-----Maud Of Flanders
|        |                 |                 |                  /-----Hugh Capet King Of France
|        |                 |                 |         /-----Robert II The Pious King Of France
|        |                 |                 |        |         \-----Adelaide Of Poitou
|        |                 |                  \-----Adelaide Of France
|        |                 |                          |         /-----William I Count Of Aries And Provence
|        |                 |                           \-----Constance Of Provence
|        |                 |                                    \-----Adelaide (Blanch) Of Anjou
|        |         /-----Robert The Consul De CAEN, Earl Of Gloucester
|         \-----Mabel
Gwenllian Ferch Arglwydd Rhys



Descendants of Gwenllian Ferch Arglwydd Rhys
1. Gwenllian Ferch Arglwydd Rhys m. Rhodri Ap OWAIN FWYNEDD Prince Of Gwynedd
m. Rhodri Ap OWAIN FWYNEDD Prince Of Gwynedd father: Owain Gwynedd Prince Of Gwynedd mother: Christina Ferch Growny