William II de Warenne 2nd Earl of Surrey ^{1 2 3}

   Other names for William were William Earl of Warren and Surrey, William Earl Warenne and William Earl of Warenne.

  Research Notes:

From Wikipedia - William de Warenne, 2nd Earl of Surrey
William de Warenne, 2nd Earl of Surrey (died 1138 ), was the son of William de Warenne, 1st Earl of Surrey and his first wife Gundred . He is more often referred to as Earl Warenne or Earl of Warenne than as Earl of Surrey.

Sometime around 1093 he tried to marry Matilda (or Edith) , daughter of king Malcolm III of Scotland . She instead married Henry I of England , and this may be the cause of William's great dislike of Henry I, which was to be his apparent motivator in the following years.
He accompanied Robert Curthose in his 1101 invasion of England , and afterwards lost his English lands and titles and was exiled to Normandy . There he complained to Curthose that he expended great effort on the duke's behalf and had in return lost most of his possessions. Curthose's return to England in 1103 was apparently made to convince his brother to restore William's earldom. This was successful, though Curthose had to give up all he had received after the 1101 invasion, and subsequently
William was loyal to king Henry.

To further insure William's loyalty Henry considered marrying him to one of his many illegitimate daughters. He was however dissuaded by Archbishop Anselm of Canterbury, for any of the daughters would have been within the prohibited degrees of consanguinity . The precise nature of the consanguinous relationship Anselm had in mind has been much debated, but it is most likely he was referring to common descent from the father of duchess Gunnor.

William was one of the commanders on Henry's side (against Robert Curthose) at the Battle of Tinchebray in 1106. Afterwards, with his loyalty thus proven, he became more prominent in Henry's court.

In 1110, Curthose's son William Clito escaped along with Helias of Saint-Saens , and afterwards Warenne received the forfeited Saint-Saens lands, which were very near his own in upper Normandy. By this maneuver king Henry further assured his loyalty, for the successful return of Clito would mean at the very least Warenne's loss of this new territory.
He fought at the Battle of Bremule in 1119, and was at Henry's deathbed in 1135.

Family
In 1118 William acquired the royal-blooded bride he desired when married Elizabeth de Vermandois . She was a daughter of count Hugh of Vermandois , a son of Henry I of France , and was the widow of Robert de Beaumont, 1st Earl of Leicester .
By Elizabeth he had three sons and two daughters:
William de Warenne, 3rd Earl of Surrey ;
Reginald de Warenne , who inherited his father's property in upper Normandy. He married Adeline, daughter of William, lord of Wormgay in Norfolk, by whom he had a son William, whose daughter and sole heir Beatrice married first Dodo, lord Bardolf, and secondly Hubert de Burgh ;
Ralph de Warenne
Gundrada de Warenne , who married first Roger de Beaumont, 2nd Earl of Warwick , and second William, lord of Kendal , and is most remembered for expelling king Stephen 's garrison from Warwick Castle ;
Ada de Warenne , who married Henry of Scotland, 3rd Earl of Huntingdon

References
C. Warren Hollister, "[The Taming of a Turbulent Earl: Henry I and William of Warenne ]", Historical Reflections 3 (1976) 83-91
C. Warren Hollister, Henry I (2001)
The Ecclesiastical History of Orderic Vitalis, ed. M. Chibnall, vol. 2, p. 264 (Oxford, 1990).

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From Wikipedia - Elizabeth of Vermandois :

In her second marriage, to William de Warenne, Elizabeth had three sons and two daughters (for a total of fourteen children - nine during her first marriage, and five during her second):
William de Warenne, 3rd Earl of Surrey and Warenne (b. 1119 dspm 1147) whose daughter Isabelle de Warenne, Countess of Surrey married 1stly
William, Count of Boulogne (dsp), yr son of King Stephen, and married 2ndly
Hamelin Plantagenet , an illegitimate half-brother of King Henry II of England by whom she had issue, later earls of Surrey and Warenne.
Reginald de Warenne, who inherited his father's property in upper Normandy. He married Adeline, daughter of William, lord of Wormgay in Norfolk, by whom he had a son William, whose daughter and sole heir Beatrice married first Dodo, lord Bardolf, and secondly Hubert de Burgh;
Ralph de Warenne (dsp)
Gundrada de Warenne , (Gundred) who married first
Roger de Beaumont, 2nd Earl of Warwick and had issue; second (as his 2nd wife)
William de Warenne, 1st Earl of Warenne and Surrey and is most remembered for expelling king Stephen's garrison from Warwick Castle; and they had issue.
Ada de Warenne (d. ca. 1178 ), who married Henry of Scotland, 3rd Earl of Huntingdon , younger son of King David I of Scotland , Earl of Huntingdon by his marriage to the heiress Matilda or Maud, 2nd Countess of Huntingdon (herself great-niece of William I of England ) and had issue. They were parents to Malcolm IV of Scotland and William I of Scotland and their youngest son became David of Scotland, 8th Earl of Huntingdon . All Kings of Scotland since 1292 were the descendants of Huntingdon.

William married Isabel de Vermandois Countess of Leicester, daughter of Hugh Magnus of Vermandois and Valois, Duke of France and Adelaide de Vermandois Countess of Vermandois and Valois, after 1118. (Isabel de Vermandois Countess of Leicester was born about 1081 in <Valois, Île-de-France, France>, died on 13 Feb 1131 in England and was buried in Lewes, Sussex, England.)