| Name | Marinus Jacobus GRUL |
| Birth | 29 Apr 1945, Amsterdam, Noord-Holland, Nederland |
| Occupation | Administrateur |
| Father | Marinus Jacobus GRUL (1920-1997) |
| Mother | Hendrika WALMAR (1921-1992) |
| 1 | Christina Geertruida CRAMER |
| Birth | 20 Nov 1943, Amsterdam, Noord-Holland, Nederland |
| Father | Henrich Adolph CRAMER (1916-1980) |
| Mother | Selia Fetje de ROEST (1920-1987) |
| Marriage | 4 Jan 1968, Amsterdam, Noord-Holland, Nederland |
| Children | Edwin (1975-) |