William García (also Guillaume Garcès or Guillermo Garcés) (died 960) was a Count of Fézensac.
He was the second son of García II of Gascony and Amuna.
[1] When García II died in or around 926, he gave Gascony to his eldest son Sancho IV and created appanages for his younger sons: Fézensac for William and Astarac for Arnold.
Fézensac included Auch, Vic, and the Armagnac.
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