Nielsen Hayden genealogy
Family: William Marshal / Isabel de Clare (F5382)
m. Aug 1189-
Father | Male
William Marshal
Born Abt 1146 Died 14 May 1219 Caversham, Oxfordshire, England 
Buried Temple Church, London, England Married Aug 1189 [1, 2, 3, 4] London, England [1, 2, 3, 4] Father John fitz Gilbert | F6304 Group Sheet Mother Sybil de Salisbury | F6304 Group Sheet
Mother | Female
Isabel de Clare
Born 1173 Died 7 Mar 1220 Buried Tintern Abbey, Monmouthshire, Wales Father Richard "Strongbow" fitz Gilbert | F4831 Group Sheet Mother Eve of Leinster | F4831 Group Sheet
Child 1 | Female
+ Eve Marshal
Born Died Between Jan 1242 and 1246 Buried Spouse William de Briouze | F1949 Married
Child 2 | Female
+ Joan Marshal
Born Died Bef Nov 1234 Buried Spouse Warin de Munchensy | F938 Married Aft 14 May 1219
Child 3 | Male
Walter Marshal
Born Died 24 Nov 1245 Goodrich Castle, Herefordshire, England Buried Spouse Margaret de Quincy | F5160 Married 6 Jan 1242
Child 4 | Male
William Marshal
Born Abt 1190 Died 24 Apr 1231 Buried New Temple Church, London, England Spouse Eleanor of England | F17130 Married 23 Apr 1224
Child 5 | Female
+ Maud Marshal
Born 1192 Died 27 Mar 1248 Buried Tintern Abbey, Monmouthshire, Wales Spouse Hugh II le Bigod | F272 Married 1207 Spouse William de Warenne | F1816 Married Bef 13 Oct 1225
Child 6 | Female
+ Isabel Marshal
Born 9 Oct 1200 Pembroke, Pembrokeshire, Wales Died 17 Jan 1240 Berkhamsted, Hertfordshire, England Buried Beaulieu Abbey, Hampshire, England Spouse Gilbert de Clare | F2646 Married 9 Oct 1217 Spouse Richard of Cornwall, King of the Romans | F917 Married 30 Mar 1231 Fawley, Buckinghamshire, England
Child 7 | Female
+ Sybil Marshal
Born Abt 1204 Died Bef 1238 Buried Spouse William de Ferrers | F444 Married Bef 14 May 1219
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Sources - [S142] Royal Ancestry: A Study in Colonial and Medieval Families by Douglas Richardson. Salt Lake City, 2013.
- [S145] Ancestral Roots of Certain American Colonists Who Came to America Before 1700 by Frederick Lewis Weis and Walter Lee Sheppard, Jr. 8th edition, William R. Beall & Kaleen E. Beall, eds. Baltimore: Genealogical Publishing Company, 2004, 2006, 2008.
- [S128] The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, Extant, Extinct or Dormant ed. Vicary Gibbs, H. A. Doubleday, Duncan Warrand, Howard de Walden, Geoffrey H. White and R. S. Lea. 2nd edition. 14 volumes (1-13, but volume 12 spanned two books), London, The St. Catherine Press, 1910-1959. Volume 14, "Addenda & Corrigenda," ed. Peter W. Hammond, Gloucestershire, Sutton Publishing, 1998.
- [S1526] The Ancestry of Dorothea Poyntz, Wife of Reverend John Owsley, Generations 1-15, Fourth Preliminary Edition, by Ronny O. Bodine and Bro. Thomas Spalding, Jr. 2013.
- [S142] Royal Ancestry: A Study in Colonial and Medieval Families by Douglas Richardson. Salt Lake City, 2013.