| Name | Derek John GRUL |
| Birth | 17 Feb 1959, Sydney, NSW, Australia |
| Occupation | Man. Director |
| Father | Johannes Carel GRUL (1932-2017) |
| Mother | Faith Mary APPLEBY (1938-) |
| 1 | Jennifer Dorothy PLANNER |
| Birth | 22 Sep 1958, Ryde, NSW, Australia |
| Occupation | Teacher |
| Father | John Henry PLANNER |
| Mother | Dorothy Grace GIBBONS |
| Marriage | 5 Sep 1981, Beecroft, Sydney, N.S.W., Australia |
| Children | Christopher Anthony (1987-) |
| Rachel Sarah (1990-) | |
| Nicholas John (1993-) |