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.Dunbabin, Jean, France in the making, 843-1180, (Oxford University Press, 2000), 87-88.
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.Dunbabin, 87-88.
William himself divided his county amongst his heirs: Odo, successor in Fézensac Bernard, received Armagnac Fredelon, received Garsinda, married Raymond II of Ribagorza
Notes
References Dunbabin, Jean, France in the making, 843-1180, Oxford University Press, 2000.