William X, Duke of Aquitaine

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William X, Duke of Aquitaine, son of Guillaume IX, Duke of Aquitaine, Count of Poitou and Philippa of Toulouse, was born in 1099.1 He died at Santiago de Compostela, Spain, 9 April 1137.1,2

William married Eleanor de Chastellerault, daughter of Aimery I, Viscount of Chastellerault and Dangerose Bouchard, in 1121.1

For more information about William X, Duke of Aquitaine, please see this Wikipedia article.


Eleanor de Chastellerault d. aft. Mar 1130


  1. [S89] Frederick Lewis Weis, Walter Lee Sheppard Jr. and David Faris, Ancestral Roots of Certain American Colonists Who Came to America before 1700: The Lineage of Alfred the Great, Charlemagne, Malcolm of Scotland, Robert the Strong, and Some of Their Descendants, 7th ed. (Baltimore, Maryland: Genealogical Publishing, 1992), 110-25, further cited as Weis, Sheppard, and Faris, Ancestral Roots, 7th ed.
  2. [S1947] Douglas Richardson, Royal Ancestry: A Study in Colonial and Medieval Families, Five vols. (Salt Lake City, Utah: s.p., 2013), 1:129 (Aquitaine 4), further cited as Richardson, Royal Ancestry.
  3. [S1947] Richardson, Royal Ancestry, 1:129 (Aquitaine 4.i).
  4. [S89] Weis, Sheppard, and Faris, Ancestral Roots, 7th ed., 110-26.
This person was last edited on19 May 2019