William de Molineux
- Born: Bef 1210, Sefton, Lancashire, England
- Marriage (1): Margaret de Thornton about 1229 in Sefton, Lancashire, England
- Died: 1289, Canterbury Cathedral, Kent, England
- Buried: Canterbury, Kent, England
FamilySearch ID: LD39-PPR.
William married Margaret de Thornton, daughter of Alan de Thornton and Alicia Bickerstaffe, about 1229 in Sefton, Lancashire, England. (Margaret de Thornton was born in 1212 in Thornton le Moors, Cheshire, England and died in 1250 in Sefton, Lancashire, England.)
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