| Moses Andries Waas Slap (1875 - 1942) |
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| Grietje Engelsman (1873 - 1936) |
| Jacob Slap | Rachel Menist |
| b. 8 Jan 1912, Amsterdam, Nord-Holland, Netherlands d. 10 Aug 1941, Mauthausen \death Camp, Oberosterreich, Austria. bur. occ. edu. rel. |
b. 4 May 1909, Amsterdam, Nord-Holland, Netherlands d. 26 Jan 1943, Auschwitz-Birkenau (Oswiecim) Camp, Katowice, Poland. bur. occ. edu. rel. |
| Maurice Slap Fietje Slap Margaretha (Greta) Slap |