William de Warenne 1st Earl of Surrey

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From Wikipedia - William de Warenne, 1st Earl of Surrey :
William de Warenne, 1st Earl of Surrey, (died 1088 ) was one of the Norman aristocrats who fought at the Battle of Hastings and became great landowners in England .

He was a son of Ralph de Warenne and Emma and a grandnephew of duchess Gunnor , wife of duke Richard I of Normandy . As a young man he helped secure duke William 's hold on Normandy , most notably in the campaigns of 1052 through 1054 which culminated in the Battle of Mortemer [1]. After this battle Roger de Mortemer forfeited most of his lands, and the duke gave them to William[2]. The de Warenne surname derives from the castle of that name on the River Varenne , which flows through the territory William acquired in Upper Normandy[3].
William was one of the nobles who advised duke William when the decision to invade England was being considered. He fought at Hastings[4], and afterwards received the Rape of Lewes in Sussex [5], and subsequently lands in twelve other shires. In addition to the cluster around Lewes, there were clusters around the castles he built at Castle Acre in Norfolk and Conisbrough in Yorkshire. By the time of the Domesday survey he was one of the wealthiest landholders in England.
William was loyal to William II [6], and it was probably in early 1088 that he was created Earl of Surrey [7]. He died shortly afterwards of wounds he received while helping suppress the rebellion of 1088 . At the time of his death, it has been estimated that his wealth was equivalent to £73.9 billion in today's money.

Family
He married twice:
First, Gundred (Latin: Gundrada), sister of Gerbod the Fleming, Earl of Chester.
Second, to a sister of Richard Gouet

Children of William and Gundred
William de Warenne, 2nd Earl of Surrey (d. 1138)
Edith de Warenne who married Gerard de Gournay
Reynold de Warenne, who inherited lands from his mother in Flanders and died before 1118

Notes
^ Douglas, p. 100
^ Hunt, Douglas p. 100
^ Hunt
^ Douglas, p.203
^ Hunt
^ Hunt
^ probably between the very end of 1087 and March 24, 1088 (Lewis p. 335)

References
Douglas, David C. (1964). William the Conqueror. ISBN 0300078846 .
C. P. Lewis, "The Earldom of Surrey and the Date of Domesday Book", Historical Research 63 (1990)
Notes on the family of Gerbod, Earl of Chester, and of Gundred, wife of William de Warenne, Earl of Surrey
William Warenne , reprinted from the 1917 Dictionary of National Biography
Hunt, William (1899). "William Warenne, first Earl of Surrey". Dictionary of National Biography 59. 372-373.
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William married Gundred Countess of Surrey. (Gundred Countess of Surrey was born in <Flanders>, died on 27 May 1085 and was buried in Lewes Priory, Lewes, Sussex, England.)