

| William Bertram | |
| B: | 1187 |
| Mitford, Northumberland, England | |
| D: | Yes, date unknown |
| 5th Baron of Mitford Roger Bertram, I. | |
| B: | 23 Apr 1187 |
| Mitford Castle, Morpeth, Northumberland, England | |
| D: | 1242 |
| England, United Kingdom | |
| Agnes De Emmely | |
| B: | Abt 1210 |
| Emley, Yorkshire, England | |
| M: | 1215 |
| Mitford, Lincolnshire, England | |
| D: | 27 Aug 1253 |
| Mitford, Northumberland, England | |
| Agnes De Bertram | |
| B: | Abt 1189 |
| Mitford, Northumberland, England | |
| D: | 1244 |
| Sir Thomas Fitzwilliam | |
| B: | 1195 |
| Spotbrough, Yorkshire, England | |
| D: | 1266 |
| William Bertram, Baron Of Mitford | |
| B: | 1157 |
| Mitford Castle, Morpeth, Northumberland, England | |
| D: | 1205 |
| Mitford Castle, Morpeth, Northumberland, England | |
| Alice De Umfreville | |
| B: | Abt 1161 |
| Prudhoe, Northumberland, England | |
| M: | 1185 |
| Mitford Castle, Mitford, Northumberland, England | |
| D: | 20 Aug 1253 |
| Hexham, Northumberland, England | |
| Roger Bertram | |
| B: | 1128 |
| Mitford Castle, Morpeth, Northumberland | |
| D: | 29 Sep 1177 |
| High Ward, Brinkburn, Northumberland | |
| Ada De Morville | |
| B: | Abt 1131 |
| Carlisle, Cumberland, England | |
| D: | 30 Jun 1170 |
| Mitford Castle, Mitford, Northumberland, England | |
| Guy Bertram | |
| B: | Abt 1130 |
| Mitford, Northumberland, England | |
| D: | Yes, date unknown |
| William Bertram | |
| B: | Abt 1132 |
| Mitford, Northumberland, England | |
| D: | Yes, date unknown |
|
| William Bertram, 2nd Baron Of Mitford The Fair | |
| B: | Abt 1080 |
| Mitford, Northumberland, England | |
| D: | Aft 1152 |
| Mitford, Northumberland, England | |
| Hawise Balliol | |
| B: | Abt 1103 |
| Morpeth, Northumberland, England, United Kingdom | |
| M: | 1125 |
| Mitford, Northumberland, England | |
| D: | 1136 |
| Mitford, Northumberland, England | |