Mauger ( – 1032) jure uxoris Count of Corbeil was the third son of Richard I of Normandy, and ruled as Count of Corbeil through his wife Germaine, either a daughter or granddaughter of Aymon, Count of Corbeil.The Haskins Society Journal, Volume 4 (Hambledon Press, 1992), p. 25 "Corbeil" is thought to be the modern Corbeil-Essonnes on the River Seine about 17 miles south-east of Paris.Round, p.146
Life Mauger was a son of Richard I, Duke of Normandy and his second wife, Gunnor.Detlev Schwennicke, Europäische Stammtafeln: Stammtafeln zur Geschichte der Europäischen Staaten, Neue Folge, Band II (Marburg, Germany: Verlag von J. A. Stargardt, 1984), Tafel 79 He was a younger brother of duke Richard II and uncle of duke Robert I. He married in the year 1012, Germaine, daughter or granddaughter of Aymon (Haymon), Count of Corbeil, and his wife Elizabeth Le Riche.
He may have been the father of , Count of Mortain, though this is disputed.David Charles Douglas and George William Greenaway, English Historical Documents, 1042-1189 (Psychology Press, 1996), p. 297
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