
![]() | Helena Catharina Kesper |
| Helena Catharina Kesper | |
| B: | 1 Mar 1874 |
| Amsterdam, Noord-Holland, Netherlands | |
| D: | 4 Mar 1973 |
| Haarlem, Noord-Holland, Netherlands | |
| Willem Marinus Karel Boudewijn van Idsinga | |
| B: | 2 Sep 1868 |
| Veere, Zeeland, Netherlands | |
| M: | 22 Feb 1900 |
| Arnhem, Gelderland, Netherlands | |
| D: | 4 Nov 1904 |
| Zeereis | |
![]() | Petra Constance Rambonnet |
| Petra Constance Rambonnet | |
| B: | 25 Aug 1935 |
| The Hague, South Holland, Netherlands | |
| D: | 14 Oct 2010 |
| Warrenton, Cape Province, South Africa | |
![]() | Helena Catharina Coops |
| Helena Catharina Coops | |
| B: | 21 Oct 1913 |
| The Hague, South Holland, Netherlands | |
| D: | 9 Mar 2009 |
| Baarn, Utrecht, Netherlands | |
![]() | Peter Constant Coops |
| Peter Constant Coops | |
| B: | 9 Jul 1870 |
| Doetinchem, Gelderland, Netherlands | |
| M: | 21 Nov 1912 |
| Amsterdam, North Holland, Netherlands | |
| D: | 7 Dec 1936 |
| The Hague, 's-Gravenhage, Zuid-Holland, Netherlands | |