William I, also referred to as William of Blois, was Count of Boulogne and Earl of Surrey jure uxoris from 1153 until his death. He was the second son of Stephen, King of England, and Matilda I, Countess of Boulogne.
- Occupation
- feudatory
- Citizenship
- Kingdom of England
- Born
- 1135, 1137, 1130
- Died
- October 11, 1159, 1159
