| Geoffrey FitzGeoffrey 'Magna Carta Baron' DeMandeville, 2nd Earl of Essex | |
| B: | 1191 |
| Essex, , England | |
| D: | 23 Feb 1216 |
| London, Middlesex, England | |
| Isabelle Hawisa Countess Gloucester FITZROBERT (maid. name 1) | |
| B: | 1173 |
| Tewkesbury, Gloucestershire, England | |
| M: | 20 Jan 1214 |
| London, Middlesex, England | |
| D: | 14 Oct 1217 |
| Canterbury, Kent, England | |