GUILLAUME d'Eu (-2 Jan after 1096). "Robertus comes Augensis…uxore Beatrice et filiis meis Radulfo, Willermo atque Roberto" made donations to the abbey of St Michel, Tréport by a charter dated 1036, witnessed by "Hugo vicecomes"[2316]. Domesday Book records land held by “William de Eu” in King´s Somborne in Somborne Hundred, Deane in Chuteley Hundred, and Silchester in Holdshott Hundred in Hampshire, in Reading, Kintbury and Wantage Hundreds in Berkshire, numerous land-holdings in Wiltshire, land in Hertfordshire[2317]. He ravaged Gloucestershire in 1089 after plundering Berkeley castle[2318]. He succeeded in [1093] as Comte d'Eu, Lord of Hastings. Florence of Worcester records that "Willelmi comes de Owe" deserted Robert Duke of Normandy in [1093/94] "won over by his greediness oflucre and attracted by the promise of vast domains" by William II King of England[2319]. Florence of Worcester records that "Northymbrensis comes Rotbertus de Mulbrei et Willelmus de Owe" conspired against William II King of England in [1095], planning to place "filium amitæ illius Stephanus de Albamarno" on the English throne[2320]. The same source records that Guillaume was captured after being vanquished in a duel, and condemned at Salisbury 13 Jan 1096 to be blinded and castrated[2321]. The necrology of the church of Eu records the death "2 Jan" of "Guillelmus primus comes Augi, fundator hujus ecclesiæ"[2322]. The necrology of Ulterioris Portus monastery records the death "2 Jan" of "Augensis comes Guillermus...Roberti, nostri monasterii fundatoris, filii"[2323]. m firstly BEATRICE, sister of ROGER de Builly Lord of Tickhill, daughter of --- & his wife --- (-2 Sep ----). She is named as the first wife of Comte Guillaume in the Complete Peerage, which does not cite the primary source on which the information is based[2324]. The primary source which confirms her origin has not yet been identified. The necrology of Longpont records the death “IV Non Sep” of “Beatrix comitissa”[2325]. m secondly HELISENDE d'Avranches, daughter of RICHARD Vicomte d'Avranches & his wife ---. Her marriage is referred to by Orderic Vitalis, who says that she was the sister of Hugh Earl of Chester but does not give her name[2326]. Comte Guillaume & his [first/second] wife had [five] children