Family: John de Mowbray, 4th Baron Mowbray / Elizabeth de Segrave (F6388)
m. Mar 25, 1349John de Mowbray, 2nd Baron Mowbray (1310-1361) 
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Joan Plantagenet (1315-1349)
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| John IV Segrave, 4th Baron Segreve ( -1353) |
| Margaret Plantagenet, Duchess of Norfolk (1320-1398)
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| John de Mowbray, 4th Baron Mowbray (1340-1368)
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| Elizabeth de Segrave (1338-1367)
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Joan de Mowbray (1363-1402)  |
| Eleanor de Mowbray (1364-1445) |
| Sir Thomas Earl of Mowbray, Duke of Venice (1365-1399) |
