| Isaac Moses Willing Slap (1852 - 1919) |
|
| Rachel Aaron Sturk Waas (1854 - 1932) |
| Moses Andries Waas Slap | Grietje Engelsman |
| b. 15 Sep 1875, Amsterdam, Nord-Holland, Netherlands d. 27 Nov 1942, Auschwitz-Birkenau (Oswiecim) Camp, Katowice, Poland. bur. occ. edu. rel. |
b. 3 Jan 1873, Amsterdam, Nord-Holland, Netherlands d. 28 Jul 1936, Amsterdam, Nord-Holland, Netherlands bur. occ. edu. rel. |
| Rachel Slap Joseph Moses Slap Isaac Slap Sientje Slap Aron Slap Simon Slap Jacob Slap Simon Slap |