King Stephen was born in Blois, France, in 1096. He was the son of Stephen, Count of Blois and Adela of Normandy. His mother, Adela, was the daughter of William I of England and Matilda of Flanders. Stephen married Matilda of Boulogne in about 1125. They had five children. He fought a civil war with Henry I's only daughter, Matilda, from 1139-1153. This ended with the Treaty of Wallingford in 1153 after the death of Stephen's son and heir, Eustace IV. The treaty said that Stephen would be King for the rest of his lifetime. After his death, the throne passed to Henry, son of Matilda, and not Stephen's other son William Died on 25 of October in 1154.))