Roy Family Genealogy
Family: William de Grandison, Lord Grandison / Sybil Tregoz (F5565)
m. 21 Jan 1286/87
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Pierre, Sire de Grandison ( -1258)
|
| Sir Otho de Grandision (1238-1328) |
| John de Tregoz ( -1300)
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| William de Grandison, Lord Grandison (1250-1335)
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Sybil Tregoz (1271-1334)
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Agnes de Grandison (1288-1348)  |
| John de Grandison, Bishop of Exeter (1292-1369) |
| Katherine de Grandison (1304-1349) |
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