Family Group Sheet| FATHER | | Douwe Elings Koopmans | | BIRTH | 1906 | Harich | | DEATH | 1972 | | | FATHER | Eling Rimmers Koopmans | | MOTHER | Eibertje Douwes Akkerman | | | | MOTHER | | Margje Dijkstra | | BIRTH | 1 October 1912 | Harich | | DEATH | 1998 | | | FATHER | Klaas Alles Dijkstra | | MOTHER | Wiepkjen Ykes Stoffelsma |
| | | CHILDREN | | 1. | Wiepkjen Koopmans FEMALE | | | DEATH | 28 June 2002 | | | MARRIAGE | 3 July 1962 | Geert Prins; |
| | 2. | Eling Douwes Koopmans MALE | | | BIRTH | 1936 | |
| | 3. | Klaas Douwes Koopmans MALE | | | BIRTH | 1945 | | | MARRIAGE | 1969 | Fokje Schotanus; |
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