Baldwin de Boulogne (1133-1135) (1133–1135) Parents Matilda of Boulogne Stephen, King of England Children Siblings Eustace IV, Count of Boulogne Matilda de Blois Marie I, Countess of Boulogne William I, Count of Boulogne Almaric (?) William (?) Ralph (?) Sybilla (?) Gervase of Blois