Nielsen Hayden genealogy
Family: John de Ferrers / Hawise de Muscegros (F11126)
m. Between 2 Feb 1298 and 13 Sep 1300Robert de Ferrers (1239-1279) 
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Eleanor de Bohun ( -1314)
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| Robert de Muscegros (1252-1280)
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| John de Ferrers (1271-1312)
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| Hawise de Muscegros (1276-1340)
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Eleanor de Ferrers ( -1361)  |
| Robert de Ferrers (1309-1350) |