Source: The Complete Peerage, v. ix, 1936, p 1; In 1166 Joel de Moles held 4 knights' fees in Devon under Robert the King's son, Source: Red Book of Excheque, p. 252, and in the same year William de Moles held 1 knight's fee in Yorkshire under Roger be Mowbray, and in 1172 1/4 or 1/3 fee in Normandy in the bailiqick of Ranulf de Rollancurt."