De Lacy
William Devereux's lands were taken into the King's hands on 17 March 1228 (excluding the dower of his mother, Isabel) and initially placed under the control of Gilbert de Lacy, Lord of Weobley. De Lacy was summoned to mediate a dispute in 1229 over rent due the Prior of Leonard in Pyon (Wormsley) from the lands granted them by William's father, Stephen. When Gilbert de Lacy died about 1230, Devereux's estates were placed under the direct guardianship of Gilbert's father, Walter de Lacy, Lord of Meath.