Nielsen Hayden genealogy
Family: Roger la Warre / Clarice de Tregoz (F11982)
m. Bef Oct 1276John de Tregoz (1250-1300) 
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Mabel Fitzwarine ( -1297)
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Sibyl de Tregoz (1272-1334)  |
| Roger la Warre ( -1320)
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| Clarice de Tregoz ( -1289)
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| John la Warre (1276-1347) |