Eustace IV, Count of Boulogne
King
Eustace IV ruled the County of Boulogne from 1146 until his death. He was the eldest son of King Stephen of England and Countess Matilda I of Boulogne. When his father seized the English throne on Henry I's death in 1135, he became heir apparent... Wikipedia
Born: 1130
Died: August 17, 1153 (age 23 years), Bury St Edmunds, United Kingdom
Parents: Stephen of England and Matilda I, Countess of Boulogne
Spouse: Constance of France, Countess of Toulouse (m. 1140)
Reign: 25 December 1146 – 17 August 1153