Family Group Sheet| FATHER | | Siemen Andries Siemonsma | | BIRTH | 8 September 1873 | Langweer | | FATHER | Andries Baukes Siemonsma | | MOTHER | Maria Witteveen | | | | MOTHER | | Attje Robijns Polder | | BIRTH | 1888 | Greonterp |
| | | CHILDREN | | 1. | Hiltje Siemonsma FEMALE | | | BIRTH | 6 July 1913 | Sneek |
| | 2. | Andries Bauke Siemonsma MALE | | | BIRTH | 26 January 1915 | Sneek |
| | 3. | Maria Lucia Siemonsma FEMALE | | | BIRTH | 3 January 1917 | Sneek |
| | 4. | Robijn Siemonsma MALE | | | BIRTH | 7 January 1918 | Sneek |
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