Nielsen Hayden genealogy
Family: Gilbert de Clare / Joan of Acre (F6425)
m. May 1290Richard de Clare (1222-1262) 
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Maud de Lacy ( -1289)
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Thomas de Clare (1243-1287)  |
| Rose de Clare (1252-1316) |
| Edward 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) |
| Gilbert de Clare (1243-1295)
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| Joan of Acre (1272-1307)
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| Margaret de Clare (1292-1342) |
| Eleanor de Clare (1292-1337) |
| Elizabeth de Clare (1295-1360) |