Eustace I, Count of Boulogne | |
|---|---|
| Died | 1047 |
| Noble family | House of Flanders House of Boulogne (founder) |
| Spouse(s) | Matilda of Louvain |
| Issue |
|
| Father | Baldwin II, Count of Boulogne |
| Mother | Adelina of Holland |
Eustace I, Count of Boulogne, was a nobleman and founder of the Boulogne branch of the House of Flanders. He held the county of Boulogne from 1024 until his death in 1047.