Sancho I of Astarac

Sancho I was count of Astarac in Gascony from about 1060, the only son of William I, whose full county he inherited. His eldest son William died before him; his second son Bernard became heir, while the youngest, Odo, became a monk at Simorre.

Sancho reorganized the monasteries of Astarac, granting several houses to Simorre and other abbeys. Between 1100 and 1110 he and Bernard donated land at Fonsorbes to the Holy Sepulchre and the Hospital of Saint John in Jerusalem.