| Theodore Koch |
Henri Adelaar (1881 - 1944) |
| Wilhelmina Hanstra |
Marie Anna Furth (1884 - 1944) |
| Adolf Johannes Jacobus Koch | Ilse Lotte Adelaar |
| b. 12 Oct 1914, Surabaya, Indonesia. d. 3 Oct 2003, Lelystad, Flevoland, Netherlands. bur. occ. edu. rel. |
b. 13 Feb 1919, Amsterdam, Nord-Holland, Netherlands d. 12797 bur. occ. edu. rel. |
| Maria Koch Robert Henri Theodore Koch Paulus Koch Guus Koch |