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William I Count of Boulogne

Birth
Death
11 Oct 1159 (aged 22)
Toulouse, Departement de la Haute-Garonne, Midi-Pyrénées, France
Burial
Poilley, Departement de la Manche, Basse-Normandie, France Add to Map
Memorial ID
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Count of Boulogne, Earl of Surrey, William of Blois

Third and youngest son of King Stephen of England and Countess Matilda of Boulogne. Grandson of Count Stephen of Blois and Adela of Normandy, the daughter of William the Conqueror, Eustace III, Count of Boulogne, and Mary, the daughter of King Malcolm III of Scotland and Saint Margaret of Scotland.

William married Countess Isabel de Warenne, the daughter of William de Warenne, 3rd Earl of Surrey and Adela, daughter of William III of Ponthieu.

William became Count of Boulogne at the death of his older brother, Eustace, in 1153, but was passed over for the crown of England in favor of making peace with Empress Mathilda and her son, Henry, became king, and confirmed William was the Earl of Surrey in right of his wife.

It was speculated William was involved in a plot led by Flemish mercenaries to assassinate King Henry, but it was never proven.

William died "before the gates of Toulouse" and buried at the Poitevin Abbey of Montmorel. Other sources state he was buried at the Hospital of Montmorllion in Poitou.

After his death, his sister, Mary, succeeded the position of Countess of Boulogne, and his widow, Isabel married Hamelin de Warenne, the illegitimate son of Geoffrey Plantagenet and half brother of King Henry II.





Count of Boulogne, Earl of Surrey, William of Blois

Third and youngest son of King Stephen of England and Countess Matilda of Boulogne. Grandson of Count Stephen of Blois and Adela of Normandy, the daughter of William the Conqueror, Eustace III, Count of Boulogne, and Mary, the daughter of King Malcolm III of Scotland and Saint Margaret of Scotland.

William married Countess Isabel de Warenne, the daughter of William de Warenne, 3rd Earl of Surrey and Adela, daughter of William III of Ponthieu.

William became Count of Boulogne at the death of his older brother, Eustace, in 1153, but was passed over for the crown of England in favor of making peace with Empress Mathilda and her son, Henry, became king, and confirmed William was the Earl of Surrey in right of his wife.

It was speculated William was involved in a plot led by Flemish mercenaries to assassinate King Henry, but it was never proven.

William died "before the gates of Toulouse" and buried at the Poitevin Abbey of Montmorel. Other sources state he was buried at the Hospital of Montmorllion in Poitou.

After his death, his sister, Mary, succeeded the position of Countess of Boulogne, and his widow, Isabel married Hamelin de Warenne, the illegitimate son of Geoffrey Plantagenet and half brother of King Henry II.







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