Nielsen Hayden genealogy
Family: Peter de Brewes / Agnes de Clifford (F9880)
m. Aft 6 Jun 1300William de Brewes (1224-1291) 
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Mary de Ros ( -1326)
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| Peter de Brewes (1273-1312)
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| Agnes de Clifford ( -1331) |
Peter de Brewes ( -1378)  |
| Margaret de Brewes (1303-1349) |
| John de Brewes (1303-1342) |