MaleWilliam IV 2nd Baron De Ros |
| Birth | Abt 1285 | Helmsley Castle, Belvoir, Leichestershire, England |
| Death | 3 Feb 1342/1343 | Helmsley Castle, North Riding, Yorkshire, England |
| Burial | Kirkham, Yorkshire, England |
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| Marriage | Bef 25 Nov 1316 | of, Castle Wark, Northumberland, England |
| Father | William De Ros III Baron Ros | F845 Group Sheet | |
| Mother | Maude Matilde de Vaux | F845 Group Sheet | |
FemaleMargery De Badlesmere, Baroness Ros |
| Birth | 3 Dec 1304 | Castle, Badlesmere, Kent, England |
| Death | 18 Oct 1363 | Helmsley Castle, North Riding, Yorkshire, England |
| Burial | Bef 4 Dec 1347 | |
| Father | Bartholomew IV 1st Baron de Badlesmere, , Sir | F853 Group Sheet | |
| Mother | Margaret , Baroness Badlesmere de Clare | F853 Group Sheet | |