| Male Sir Thomas de Grey, Baron Grey of Horton, Sheriff of Northumberland, KG, MP |
| Birth | 1509 | Horton Castle, Northumberland, England |
| Death | 21 Dec 1569 | Horton Castle, Northumberland, England |
| Burial | ||
| Marriage | ||
| Father | Thomas (2nd Marquess of Dorset) Grey (maid. name Knight) | F5065 Group Sheet | |
| Mother | Lady Margaret Wotton | F5065 Group Sheet | |
| Female Lady Dorothy de Ogle, |
| Birth | 1511 | Eglingham, Northumberland, England |
| Death | 1541 | Buckton, Northumberland, England |
| Burial | ||
| Father | ||
| Mother | ||
| Female + Lady Isabel de Grey (maid. name Baroness Grey of Chillingham) |
| Birth | 1535 | Horton Castle, Northumberland, England |
| Death | 11 Jul 1581 | Chillingham Castle, Warke, Northumberland, England |
| Burial | ||
| Spouse | Sir Ralph de Grey, 2nd Baron Grey of Chillingham | F5201 | |
| Marriage | 1550 | Horton Castle, Northumberland, England |
| Female Lady Margery de Grey |
| Birth | 1535 | Horton Castle, Northumberland, England |
| Death | 1613 | Horton Castle, Northumberland, England |
| Burial |
| Male Sir Roger de Grey |
| Birth | 1538 | Horton Castle, Northumberland, England |
| Death | Horton Castle, Northumberland, England |
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| Burial |
| Female Lady Ursula de Grey |
| Birth | 1539 | Horton Castle, Northumberland, England |
| Death | circa 1605 | Horton Castle , Northumberland, England |
| Burial |
| Female Catharine Eliza Seymour |
| Birth | 25 Aug 1540 | Bradgate Park, Leicestershire, England |
| Death | 26 January 1568 | Executed - Tower of London, London, England |
| Burial |