Baldwin of Boulogne1132 - 1135 Born 1132 Died 1135 Buried Holy Trinity Priory, Aldgate Details Parents Baldwin Lived 3 years father Stephen 1092 - 1154 mother Matilda of Boulogne 1105 - 1152 Siblings Brother Eustace IV 1130 - 1153 Sister Matilda 1135 - 1141 Sister Marie I 1136 - 1182 Brother William I 1137 - 1159