John was born on 11 APR 1319 in Fonmon Castle, Barry, Glamorganshire, Cymru, the son of John de St. John and Elizabeth de Umfreville.
He died in AUG 1374 in Faumont, Glamorganshire, Cymru.
His wife was Isabel de Paveley. They were married, but the date and place have not been found. Their two known children were sir Oliver (c1346-c1437) and Henry (c1360-1407).
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sir John de St. John |
John de St. John |
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Elizabeth de Umfreville |
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| Event | Date | Details | Source | Multimedia | Notes | ||
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| Birth | 11 APR 1319 |
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| Death | AUG 1374 |
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