Clémence d'Oisy
- Born circa 1110
- Deceased after 1165
Parents
- Hugues d'Oisy (1075 - aft. 1133), seigneur d'Oisy, châtelain, moine
- Hildéarde de Mons, alias Héliarde de Mons (1085 - 1167)
Family
- Married with Guillaume de Béthune (c. 1095 - 1144), seigneur de Béthune, issuing
