William was born about 1417, the son of William Sidney and Cecily Mitchell. The place is not known.
He died in 1454. The place is not known.
He had two marriages/partners. His first wife was Isabel St. John. They were married, but the date and place have not been found. Their two known children were William (?-1462) and Elizabeth (?-?).
His second wife was Thomasine Barrington. They were married, but the date and place have not been found. Their only known child was Nicholas (?-1512).
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William Sidney |
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Cecily Mitchell |
John Mitchell |
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| Event | Date | Details | Source | Multimedia | Notes |
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| Birth | ABT 1417 |
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| Death | 1454 |
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