| Isak de Leeuwe (1846 - 1899) |
Joseph Cohn |
| Marianne Levi Stibbe (1843 - 1904) |
Bertha Rollman |
| Joel de Leeuwe | Hengelo Sibilla Cohn |
| b. 16 May 1879, Zwolle, Overijssel, Netherlands d. 14 May 1943, Sobibor Death Camp, Biala Podleska, Poland. bur. occ. Music Teacher edu. rel. |
b. abt 1897, Weilerswist, Germany d. bur. occ. edu. rel. |
| Marie Ann Bertha de Leeuwe |