| b 1090, Of, Hinckley, Lancastershire, England | Gervase De Grentmesnil | 61 27 May 1936, !& | Robert De Grentmesnil | |
| Hugh De Grentmesnil, Lord of Hinckley | b 1003 | Giroie De Eschauffen | ||
| | b 1032 | Hawise De Eschauffen | Gisele De Montfort | ||
| Ivo De Grentmesnil | d 22 Feb 1098 | b 1007 | ||
| |b 1064 | | | |||
| |d 1118 | Alice Adeliza De Beaumont | |||
| | | b 1034 | |||
| Ivo De Grentmesnil | Adalbert De Gand | > | ||
| | | Ralph De Gand | Ermengarde De Flanders | > | | | Gilbert De Gaunt | b 1022 |
| | | |b 1048 | Gisele | ||
| Felia De Gaunt | d 1094 | b 1028 | ||
| b 1070 | | | Hugh De Montfort, [Count] | ||
| Alice De Montfort | b 1020 | |||
| b 1050 | ||||