William X, Duke of Aquitaine

William X
Born1098
Toulouse
Died9 April 1137(1137-04-09) (aged 37–38)
Santiago de Compostela, Spain
SpouseAenor de Châtellerault
Issue
HousePoitiers
FatherWilliam IX, Duke of Aquitaine
MotherPhilippa of Toulouse

William X (Occitan: Guillém X; 1099 – 9 April 1137), called the Saint, was Duke of Aquitaine, Duke of Gascony, and Count of Poitou (as William VIII) from 1126 to 1137.