FemaleHelena Catharina Coops |
| Birth | 21 Oct 1913 | The Hague, South Holland, Netherlands |
| Death | 9 Mar 2009 | Baarn, Utrecht, Netherlands |
| Burial | ||
| Father | Peter Constant Coops | F1711291183 Group Sheet | |
| Mother | Helena Catharina Kesper | F1711291183 Group Sheet | |
FemalePetra Constance Rambonnet |
| Birth | 25 Aug 1935 | The Hague, South Holland, Netherlands |
| Death | 14 Oct 2010 | Warrenton, Cape Province, South Africa |
| Burial | ||
| Spouse | Hendrik Jaap Holthuis | F1711290449 (civil) | |
| Marriage | ||