Family Group Sheet| HUSBAND | | Leffert Folkertsma | | BIRTH | 1900 | | | DEATH | 1967 | | | MARRIAGE | | | | FATHER | Bauke Lieuwes Folkertsma | | MOTHER | Hendrikje Reins Reinsma | | | | WIFE | | Hiltje Tjalma | | BIRTH | 1906 | | | DEATH | 1993 | | | FATHER | Thijs Tjalma | | MOTHER | Klaaske Leffertstra |
| | | CHILDREN | | 1. | Bouke Folkertsma MALE | | | BIRTH | 10 June 1929 | Sondel | | DEATH | 3 January 2013 | | | MARRIAGE | | Jacoba Bouwman; |
| | 2. | Klaaske Folkertsma FEMALE | | | BIRTH | 11 February 1935 | |
| | 3. | Thys Jan Folkertsma MALE | | | BIRTH | 4 July 1939 | |
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