Family Group Sheet| FATHER | | Gerlof Dirks Jaarsma | | FATHER | Dirk Jans Jaarsma | | MOTHER | Ymkje Gerlofs Walstra | | | | MOTHER | | Durkje Thijsses de Boer |
| | | CHILDREN | | 1. | Thijs Gerlofs Jaarsma MALE | | | BIRTH | 1866 | Koudum | | DEATH | 19 September 1934 | Koudum | | MARRIAGE | 23 May 1895 | Grietje Dirks Hoekstra; |
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