Held Stopham under Earl Roger AD 1086 (Doomsday Survey), which he gave to his younger brother Ralph.
Peter Barttlet of Australia says: "the elder son of Adam de Berthelot was named Robertus de Bartelot and is thus recorded in two 11th century documents that help to explain why, upon the death of his father, Robert gave up his birthright in favour of a younger brother, Radolphus (Ralph) who promptly adopted the name (de Stopham) by which the land grant the family then occupied was known and with it a somewhat different coat-of-arms, thus helping researchers to distinguish between the two brothers and their descendants. Robert chose a more adventurous and rewarding life with the de Brionne family, accepting his father's responsibilities as Earl Guido de Brionne's (of Brionne Castle, Liseux) trusted Esquire, but which Adam could no longer fulfill as a grantee of land owing fealty to the Lords of Arundel Castle."