Complex sentence: Hugh d'Avranches was born around 1047, the son of Richard le Goz, Viscount of Avranches and Emma de Conteville, and inherited from his father a large estate, not just in the Avranchin but scattered throughout western Normandy.
Split into simpler sentences: Hugh d'Avranches was born around 1047 was the son of Richard le Goz, Viscount of Avranches. Hugh inherited from his father a large estate, not just in the Avranchin but scattered throughout western Normandy.