William was born about 1234 in Basing, Hampshire, England, the son of sir Robert de St. John and Agnes de Cantelupe.
He died on 09 MAR 1253/54 in St. Macaire.
His wife was Isabel Combmartin, who he married in 1266 in Faumont, Glamorganshire, Cymru. They had no known children.
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William de St. John |
sir Robert de St. John |
William de St. John |
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Godechild de Paganel |
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Agnes de Cantelupe |
sir William II de Cantelupe |
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Mélisende de Gournay |
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| Event | Date | Details | Source | Multimedia | Notes | ||
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| Birth | ABT 1234 |
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| Death | 9 MAR 1253/54 |
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