| Isaac Moses Willing Slap (1852 - 1919) |
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| Rachel Aaron Sturk Waas (1854 - 1932) |
| Salomon Kleerekooper | Bloema Waas Slap |
| b. 14 Aug 1897, Amsterdam, Nord-Holland, Netherlands d. 4 Jun 1943, Sobibor Death Camp, Biala Podleska, Poland. bur. occ. edu. rel. |
b. 21 Sep 1896, Amsterdam, Nord-Holland, Netherlands d. 4 Jun 1943, Sobibor Death Camp, Biala Podleska, Poland. bur. occ. edu. rel. |
| Living |