Family Group Sheet| HUSBAND | | Klaas de Vrij | | REF # | | 451; | | MARRIAGE | 5 September 1901 | Haskerland | | | | WIFE | | Trijntje Holkema | | BIRTH | 5 May 1878 | | | REF # | | 792; | | FATHER | Sjoerd Holkema | | MOTHER | Jetske Klazes de Vries |
| | | CHILDREN | | 1. | Koop Klases de Vrij MALE | | | BIRTH | 17 February 1911 | joure | | DEATH | 26 January 2002 | Warmond | | REF # | | 22647; | | OCCUPATION | | gymnastiekleraar en fysiotherapeut; |
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