Nielsen Hayden genealogy
Family: John de Mowbray / Joan of Lancaster (F5981)
m. Between 28 Feb 1327 and 4 Jun 1328John de Mowbray (1286-1322) 
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Aline de Brewes (1290-1324)
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| Henry of Lancaster (1280-1345)
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| Maud de Chaworth (1282-1322)
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Maud of Lancaster ( -1377)  |
| Henry of Grosmont (1314-1361) |
| Eleanor of Lancaster (1318-1372) |
| Mary of Lancaster (1320-1362) |
| John de Mowbray (1310-1361)
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| Joan of Lancaster (1312-1349)
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| Eleanor de Mowbray ( -1387) |
| John Mowbray (1340-1368) |