ROBERT d'Eu, son of GUILLAUME Comte d'Hiémois et d'Eu & his wife Lesceline de Tourville ([1005/10]-8 Sep [1089/93], bur Le Tréport). Guillaume of Jumièges names “Rodbertum...Willelmum Suessionensem comitem atque Hugonem Luxoviensem præsulem” as the three sons of “ducis uno ex patre fratrem progenitum...Willelmum” and his wife “Lezscelinam...filiam...Turchetilli”, adding that Robert succeeded to his father´s county[2296]. He is named as the son of Guillaume Comte d'Eu by Orderic Vitalis[2297]. Robert´s date of birth is estimated from his having three sons who are named in a charter dated 1036. The date is consistent with his father´s estimated birth date, although it means that he must have been extremely old when he died. "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"[2298]. An undated charter, dated to the [1035/50], records the donation of "predium Heltonis quod possedit Gozelinus vicecomes" to the abbey of Sainte-Trinité at Rouen, with the support of "Willelmus comes Normanniæ, et Willelmus, filius Willelmi comitis, qui et hæres Heltonis, et Robertus comes frater eius…Niellus…et Turstinus vicecomites", subscribed by "…filii Turchitilli Hugo et Goffridus necnon Walerannus comes", signed by "Gozelini vicecomitis, Heltonis, Willelmi heredis Heltonis, Walberti fratris Heltonis, Waleranni comitis, Alberici comitis, Heltæ filii Heltonis…"[2299]. An undated charter, dated to [1049], records that "Lezelina comitissa…cum filiis suis" was expelled "de castro Ou" and donated land on the banks of the Seine to Sainte-Trinité de Rouen, with the consent of "filiis suis Hugone, Willelmo, Rotberto"[2300]. He succeeded his father as Comte d'Eu, indicating presumably that he was the eldest son. Orderic Vitalis names “...Rodbertus comes, Willermi Aucensis Satrapæ filius...” among the leading lords under Guillaume II Duke of Normandy[2301]. "Rotbertus comes de Ou et Beatrix conjux eius" donated "jure hereditario silvam de Spinei" to Sainte-Trinité de Rouen, with the consent of "filiis suis", by undated charter dated to "tempore que discordia cepit inter [Willelmus comes Normanniæ] et Henricum regem Francorum", witnessed by "…Willelmi filii Osberni, Rodulfi camerarii…Goisfredi filii Osberni de Ou, Ansfredi fratris eius, Widonis filii Amalrici, Rainaldi de Sancto Martino, Osberti de Albert Villa…"[2302]. "Rotberti comitis de Auco" witnessed a charter of "Rogerius de Buslei" dated 1053[2303]. Robert of Torigny's De Immutatione Ordinis Monachorum records that "Lecelina comitissa Aucensis relicta Willermi comitis" founded "mon. Sancti Petri super Divam virorum et mon. fem. ante urbem Lexoviensem" with "filiis suis Roberto comite Aucensi et Hugone episcopo Lexoviensi"[2304]. The Brevis Relatio de Origine Willelmi Conquestoris records that "Roberto comite Augiensi" contributed 60 ships towards the invasion of England in 1066[2305]. Orderic Vitalis records that “Rodbertus Aucensium comes et Gauterius Gifardus et Radulfus de Mortuomari” and nearly all the seigneurs who lived “trans Sequanam usque ad mare” joined King William II against his brother Robert Duke of Normandy and received considerable sums to fortify their castles, dated to [1089/90][2306]. The necrology of Saint-Nicaise de Meulan records the death of "Robertus comes Aucensis", undated but listed among deaths recorded in early September[2307]. The necrology of Ulterioris Portus monastery records the death "8 Sep" of "Robertus comes Augensis hujus ecclesiæ fundator"[2308].
m firstlyBEATRIX, daughter of --- (-10 Apr ----). "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"[2309]. "Rotbertus comes de Ou et Beatrix conjux eius" donated "jure hereditario silvam de Spinei" to Sainte-Trinité de Rouen, with the consent of "filiis suis", by undated charter dated to "tempore que discordia cepit inter [Willelmus comes Normanniæ] et Henricum regem Francorum"[2310]. The necrology of Ulterioris Portus monastery records the death "10 Apr" of "comitissa Beatrix, loci hujus...fundatrix"[2311]. This entry must be linked to the wife of Comte Robert as the latter is described as "nostri monasterii fundatoris" in the entry which relates to their son Guillaume (see below) and also in his own entry in the same necrology.
m secondly (repudiated before [1080][2312]) as her first husband, MATHILDE of Sicily, daughter of ROGER I Count of Sicily & his first wife Judith d'Evreux (1062-before 1094). The primary source which confirms her parentage and first marriage has not yet been identified. According to Houben[2313], Mathilde who married Robert Comte d'Eu was the daughter of Roger I Count of Sicily by his second wife, and a different person from Mathilde his daughter by his first wife who married Raymond Comte de Saint-Gilles. No source is quoted, but this seems unlikely from a chronological point of view as Roger's second marriagetook place in [1077], and Robert Comte d'Eu died in [1089/93]. In addition, it seems unlikely that Roger, at the height of his power as Count of Sicily in the late 1080s, would have agreed to his daughter's marriage to an obscure count in northern France at the same time as arranging royal marriages for his other daughters. She married secondly ([1080], divorced [1088]) as hissecond wife, Raymond de Toulouse, who later succeeded as Raymond IV Comte de Toulouse. Malaterra records the marriage of "Raimunduscomes Provinciarum"and "Matildem filiam suam [Rogerii Siculorum comitis]…de prima uxore" which he dates to 1080[2314].