[3] The "head" of the barony was at Stogursey, but it also held lands in Northamptonshire, Oxfordshire, Devonshire, Wiltshire, and Essex.
In later years, William owed scutage on 24.75 fees for Stogursey and 16.5 for his mother's lands.
[5] William married Gundrada, the daughter of Reginald de Warenne.
His heir was a son, William de Courcy, who died in 1194.
The elder William also had a daughter, Alice, who was his eventual heiress, after the death of her brother.