Geoffrey de Mandeville, 4th Earl of Essex
- 1216( = Descendancy chart to this point, = Expand, = Collapse)
- 1 Geoffrey de Mandeville, 4th Earl of Essex d. 23 Feb 1215/16
- + Isabella de Clare, Countess of Gloucester b. Bef 1176 d. 14 Oct 1217
- + Isabella de Clare, Countess of Gloucester b. Bef 1176 d. 14 Oct 1217