- Born in 1134
- Deceased in 1205, at the approximate age of 70 years
Parents
- William de Percy (1112 - 1175)
- Alice de Clare, Alice de Tonbridge (1113 - 1166)
Family
- Married in 1151, with Joscelin de Louvain (1121 - 1180), Lord of Petworth, issuing
Henry (1156 - 1198)