Nielsen Hayden genealogy
Family: Ralph de Monthermer / Joan of Acre (F66)
m. Abt 1296Edward I, King of England (1239-1307) 
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Eleanor of Castile, Queen Consort of England (1240-1290)
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Margaret of England (1275-1333)  |
| Elizabeth of England (1282-1316) |
| Edward II, King of England (1284-1327) |
| Ralph de Monthermer ( -1325) |
| Joan of Acre (1272-1307)
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| Thomas de Monthermer (1301-1340) |