3rd Earl of Oxford. Born to Aubrey de Vere and Agnes de Essex his 2nd wife. Married Isabel de Bolebec daughter of Hugh de Bolebec by which Robert became the 2nd Baron of Bolebec. Father of Alice "Alicia" (1186-1206); Eleanor (1188-); Robert (1208-1250)& Hugh "4th Earl Oxford" (1210-1263). (His wife Isabel married 2ndly Henry de Nonant in 1221 following his death.)He was Lord High Chamberlin.