Guillaume de Courcy
- Born circa 1090
- Deceased in 1176, at the approximate age of 85 years
Parents
- Robert de Courcy (1070 - 1131)
- Rohaise de Grandmesnil
Family
- Married in 1132, with Maud d'Avranches (1097 - 1173), issuing
Occupations
- grand sénéchal de Normandie