Eustace IV, Count of Boulogne Eustace IV, Count of Boulogne Eustace IV (c. 1127–1135 – 17 August 1153), Count of Boulogne, 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 to the English throne. Upon his mother's death in 1152 he inherited the county of Boulogne and other estates. Eustace was first mentioned in one of his parents' charters dated no later than August 1131. As heir to the English throne in 1137, he did homage for Normandy to Louis VII of
Henry, Prince of Capua Henry, Prince of Capua Henry ("Arricus" or "Arrico") (1160–1172) was the youngest and second surviving son of William I of Sicily by Margaret of Navarre. By his father's will he succeeded to the title Prince of Capua, an appanage to the throne, while his brother William succeeded to the throne. Henry's coronation as prince was postponed from the death of his father (1166). He was present with William at Taranto, where the young king awaited his Greek bride. They planned to return via Capua and there invest Henry with his principality, but not far off from the town, Henry came