She is married to Jan van Kammen.
Permission for the marriage has been obtained in Dantumadeel (Dantumadeel) (Friesland) on May 28, 1896.Source 2
They got married on May 28, 1896 at Dantumadeel (Dantumadeel) (Friesland), she was 34 years old.Source 3Grietje Koster | ||||||||||
1896 | ||||||||||
Jan van Kammen |
http://www.genealogieonline.nl/stamboom-koster-laanstra/I37215481.php
Tresoar, Frysk Histoarysk en Letterkundich Sintrum
Huwelijksakte Toeg.nr. 30-08 Inv.nr. 2034 Aktenr. 47