Robert de Conteville, comte de Mortain
http://en.wikipedia.org/wiki/Robert,_Count_of_Mortain
Robert was the son of Herluin de Conteville and Herleva of Falaise and brother of Odo of Bayeux.[1] Robert was born c. 1031 in Normandy, a half-brother of William the Conqueror.[2] and was probably not more than a year or so younger than his brother Odo, born c. 1030.[1][3] About 1035, Herluin, as Vicomte of Conteville, along with his wife Herleva and Robert founded Grestain Abbey.[4]
Herluin de Conteville
No contemporary record provides the parentage for Herluin,[4] although much later sources have assigned him parents (such as the otherwise unknown Jean de Conteville (965) and Harlette de Meulan[citation needed]). Herluin was a lord of moderate income and some land on the south side of the river Seine. He was viscount of Conteville, probably so created by his stepson, and held the honour of Sainte-Mère-Église, a portion of the county of Mortain. There he founded the Grestain Abbey around 1050 with his son Robert.[5]
Herluin's marriage to Herleva[edit]
Towards the beginning of the 11th century, Conteville and its dependencies appear to be in the hands of Herluin, who married Herleva, the mistress of Robert I, Duke of Normandy and already mother of William the Bastard, called William the Conqueror later. Herluin and Herleva had two sons and two daughters: Odo or Eudes, who became Bishop of Bayeux, and Robert who became Count of Mortain; both were prominent in the reign of their half-brother William. The daughters: Emma, who married Richard LeGoz or Richard Goz(fr) (count or viscount of Avranches), and a daughter of unknown name, sometimes called Muriel, married Guillaume, Seigneur de la Ferté-Macé.[1] Herluin is said to have loyally borne Guillaume's body to his grave at Caen after he died in the burning of Mantes.[6]
http://en.wikipedia.org/wiki/Herluin_de_Conteville