| Father | Male John De Mowbray, [Baron Mowbray] |
| Born | 17 Jun 1340 | Epworth, Isle of Axholme, Lincolnshire, England |
| Died | 1367 | Constantinople, Constantinople, Turkey |
| Buried | ||
| Married | 1348 | |
| Father | John De Mowbray, [Baron Mowbray] | F8945 Group Sheet | |
| Mother | Joan Plantagenet, [Baroness] | F8945 Group Sheet | |
| Mother | Female Elizabeth De Segrave, [Baroness] |
| Born | 17 Oct 1338 | Croxton Abbey, Norfolk, England |
| Christened | 17 Oct 1338 | Croxton, Leic, England |
| Died | Bef 1367 | |
| Buried | ||
| Father | John De Segrave, [Baron Segrave] | F8918 Group Sheet | |
| Mother | Margaret Plantagenet, [Duchess] | F8918 Group Sheet | |
| Child 1 | Female + Joan De Mowbray |
| Born | Abt 1362 | |
| Died | Aft 21 Nov 1402 | |
| Buried | ||
| Spouse | Thomas Grey, Sir Knight | F25249 | |
| Married | ||
| Child 2 | Female + Eleanor De Mowbray, [Baroness] |
| Born | Bef 17 Mar 1364 | Of Epworth, Isle of Axholme, Lincolnshire, England |
| Died | Aft 1398 | |
| Buried | ||
| Spouse | John Welles | F8935 | |
| Married | Apr 1386 | |
| Spouse | John De Welles | F8933 | |
| Married | ||
| Child 3 | Male John De Mowbray, [Earl] |
| Born | 24 Jul 1365 | Epworth, Isle of Axholme, Lincolnshire, England |
| Died | Bef 4 Feb 1382 | |
| Buried | White Friar's Ch, Fleet Street, London, England |
| Child 4 | Male Thomas De Mowbray, Duke of Norfolk |
| Born | 14 Mar 1365 | Epworth, Isle of Axholme, Lincolnshire, England |
| Died | 14 Sep 1399 | Venice, Venice, Italy |
| Buried | St.George Abbey, Venice, Venice, Italy |
|
| Spouse | Elizabeth Strange | F8936 | |
| Married | Feb 1383 | |
| Spouse | Elizabeth Fitzalan | F8937 | |
| Married | 1383 | Castle, Arundel, Sussex, England |