Mietje Lens, daughter of Elias Lens and Rachel Prins, married in Den Haag on 3 November 1915 Andries Koekoek, a son of Simon Koekoek and Naatje Fresco.
Municipal Archive of Den Haag, certificate of marriage of Andries Koekoek, 1915 Series A nr. 854 and his family registration card from the People’s Registry.