WILLIAM (son of RAINALD) was the tenant of William de Warenne in 1086 in Poynings, Pangdean, and elsewhere in Sussex, in Foulden, Norfolk, and in Wrentham and elsewhere in Suffolk. Although there is no evidence to prove that he was the lineal ancestor, he was certainly the predecessor in Sussex of ADAM DE POYNINGS, who with Beatrice his wife and Adam their son gave to Lewes Priory the churches of Poynings and Pangdean, with 12 solidates of land in specified places in Sussex and 5 messuages in Lewes, which gifts were confirmed by William, (third) Earl de Warenne, 1138-47. Adam de Poynings the elder died ante 1148 (d). [Complete Peerage X:656, (transcribed by Dave Utzinger)]
(d) See page 657, note (a). [This note actually says bef. 1147.]