Family Group Sheet| FATHER | | Abraham Yzaks van der Werf | | | | MOTHER | | Jeltje Jans Sinning |
| | | CHILDREN | | 1. | Sybren Abrahams van der Werf MALE | | | BIRTH | 1846 | Bergum | | MARRIAGE | 14 November 1872 | Bintje Kornelis Boonstra; Tietjerksteradeel | | MARRIAGE | 3 July 1880 | Jitske Kornelis Boonstra; |
|
