Nielsen Hayden genealogy
Family: Robert de Thweng / Alice de Merlay (F10759)
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Marmaduke de Thweng ( -1282)
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Lucy de Brus ( -1282)
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Marmaduke de Thweng ( -1323)  |
| Roger de Merlay ( -1265)
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| Isabel de Ros ( -1275)
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| Isabel de Merlay (1256-1303) |
| Robert de Thweng ( -1284)
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| Alice de Merlay (1258-1268)
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| Lucy de Thweng ( -1346) |