Back يوستاس الرابع، كونت بولوني Arabic Eustaqui IV de Boulogne Catalan Eustach IV. z Boulogne Czech Eustach IV. (Boulogne) German Ευστάθιος Δ΄ της Βουλώνης Greek Eŭstako la 4-a (Bulonjo) Esperanto Eustaquio IV de Boulogne Spanish Eustache IV de Boulogne French Eustache IV dari Boulogne ID Eustachio IV di Boulogne Italian
| Eustace IV | |
|---|---|
 Piece of coinage with Eustace IV's effigy | |
| Count of Boulogne | |
| Reign | 25 December 1146 – 17 August 1153[1] |
| Predecessors | Matilda I and Stephen |
| Successor | William I |
| Born | c. 1130[1] |
| Died | 17 August 1153 (aged c. 23) Bury St Edmunds, Suffolk |
| Burial | |
| Spouse | |
| House | Blois |
| Father | Stephen, King of England |
| Mother | Matilda I, Countess of Boulogne |
Eustace IV (c. 1129/1131 – 17 August 1153) 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.[2] When his father seized the English throne on Henry I's death in 1135, he became heir apparent to the English throne but predeceased his father.
- ^ a b Heather J. Tanner, Eleanor of Aquitaine: Lord and Lady, ed. B. Wheeler, John C. Parsons, (Palgrave Macmillan, 2002), 153.
- ^ Edmund King, Eustace, count of Boulogne, Oxford Online Dictionary of National Biography, 2004