William de Mortaigne , Earl of Cornwall 
William de was born before 1084 in Mortagne-au-Perche, Orne, Normandy, France.1 William de's father was Robert Count De Mortaigne Earl of Cornwall and his mother was Matilda Maud de Montgomery. His paternal grandparents were Herluin de Conteville Viscount Conteville and Harlette De Falaise Countess of Mortaigne; his maternal grandparents were Roger II de Montgomery Earl of Arundel and Mabel Talvas Belesme Countess of Shrewsbury. He had four sisters named Agnes de Mortain, Emma de, Agnes de and Denise de. He was the youngest of the five children. He had a half-sister named Miss de. He died in 1140 in Bermondsey, London, England (as a Cluniac monk).1 General Notes
EARLDOM of CORNWALL
William de Mortain, Earl of Cornwall, also Count of Mortain, son andheir. He appears to have been b. before 1084, and to have coveted theEarldom of Kent, held by his uncle, Eudes (1067-97), and, beingdisappointed thereof, to have rebelled, with Robert de Belleme, againstthe King in Normandy, in an endeavor to recover that Duchy for Robert,the King's elder brother. They were defeated and taken prisoners, 24 Apr1106, at Tinchebray, when, being attainted, his honours becameforfeited. He m. Adilidis. After many years' imprisonment, he became aCluniac monk, in 1140, at Bermondsey, where he d., probably sp. [CompletePeerage, III:418-9]
!Son of Robert, Count de Moreton. Rebelled against Henry I, demanding the earldom of Kent, which his uncle Odo had held. [The Bruces and the Cumyns, p. 391]
MINOR, NEWLIN LINES
!Earl of Cornwall, who, rebelling against Henry I, joined Robert of Normandy, and led the van at the battle of Tenchebray. In this conflict, after displaying great personal valor, he fell into the hands of his opponents and was sent prisoner to England, where he was treated with much cruelty, the king
causing his eyes to be put out, and detaining him in captivity for life. Left two sons, Adelm and John. [The Roll of Battle Abbey, p. 23]
After the death of his father, Count Robert, he demanded of King Henry I, besides his own inheritance, the earldom of Kent, which had belonged to his deceased uncle, Bishop Odo. On being refused the request, he started a revolt in Normandy, was captured at the battle of Tenchebrai, thrown into prison, had his eyes put out and died there. [Falaise Roll, p. 95]
Forfeited Conteville (Eure, arr. Pont-Audemer, cant. Beuzeville) to the king in 1106. [Anglo-Norman Families, p. 31]
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Ancestor Pedigree Chart
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*There are earlier generations for the ancestor(s) indicated. See their page(s) for details (click name)
- b.~ 0850 in <, Blois, Loir-et-Cher, France>
- b.~ 0900 in <, Blois, Loir-et-Cher, France>
- b.~ 0969 in Conteville, France d.Bet 1010 and 1040 in Conteville, Eure, Normandy, France
- b.~ 1001 in Conteville, Eure, Normandy, France d.1080
- b.~ 0974 in Mellent, Normandy, France d.Bet 1005 and 1060
- b.~ 1037 in ,Mortaigne,Normandie,France d.08 Dec 1090 in Abbey of St. Grestain, Normandy, France
- b.~ 0978 in Falaise, Cavados, France
- b.1003 in Falaise, Calvados, France d.1050 in Caen,France
- b.0980 in Falaise,Calvados,France d.Bet 1003 and 1060
- b.< 1084 in Mortagne-au-Perche, Orne, Normandy, France d.1140 in Bermondsey, London, England (as a Cluniac monk)
- b.0990 in St Germain,Montgomery,Normandy d.07 Feb 1056
- b.~ 1005 in St. Germain de Montgomery,Calvados,Normandy d.27 Jul 1094 in Battle of Cardiff,Wales
- b.~ 0975 in Pont-Audemer,Normandy,France d.~ 1048
- b.~ 1039 in Mortaigne,S-Mnch,France,Normandy d.1082
- b.~ 0995 d.1048
- b.ABT 1015/1020 in ,Alencon,Bell,France d.02 Dec 1079 in Bures
- b.~ 0995
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1 Complete Peerage of England Scotland Ireland Great Britain and the United Kingdom, by G. E Cokayne, Sutton Publishing Lt @ III:428-9
Further sources/citations:
Burke's Peerage & Baronetage, 106th Edition, Charles Mosley Editor-in-Chief, 1999 @ cxiv, The Bruces and the Comyns @ p. 391, The Roll of Battle Abbey @ p. 23, Falaise Roll: Recording Prominent Companions of William Duke of Normandy at the Conquest of England @ p. 95, The Origins of Some Anglo-Norman Families @ p. 31
Further sources/citations:
Burke's Peerage & Baronetage, 106th Edition, Charles Mosley Editor-in-Chief, 1999 @ cxiv, The Bruces and the Comyns @ p. 391, The Roll of Battle Abbey @ p. 23, Falaise Roll: Recording Prominent Companions of William Duke of Normandy at the Conquest of England @ p. 95, The Origins of Some Anglo-Norman Families @ p. 31
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