(Notes: You may have to scroll down or right to see chart.)
| DE BOHUN Ralph (1208) | |
| B: | After 1208 |
| DE BOHUN Humphrey IV (1143), | |
| B: | 1143 |
| D: | 1182 |
| DE GLOUCHESTER Margaret (1122) | |
| B: | 1122 |
| D: | 1145 |
| DE BOHUN Humphrey III (1109), | |
| B: | 1109 |
| Hertford Castle, Hertford, England | |
| D: | 06 Jun 1187 |