Nielsen Hayden genealogy
Family: Thomas de Berkeley / Katherine de Clivedon (F11242)
m. 30 May 1347Maurice de Berkeley (1271-1326) 
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Eve la Zouche ( -1314)
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Isabel de Berkeley ( -1362)  |
| Milicent de Berkeley ( -1322) |
| Thomas de Berkeley (1296-1361)
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| Katherine de Clivedon ( -1386)
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| John Berkeley (1352-1428) |