Koos Vos, born 1866 in Kampen, was a son of Isaak Vos and Lotje de Leeuw. 31 October 1906 he married Rachel Lievenag in Enschede; she was born 10 September 1971 in Borne and a daughter of Salomon Lievendag and Rozetta Sleisner.
Koos Vos was born into a family where in 1861 a baby-girl was born, who however died after only 11 days. Of Isaak Vos and Lotje de Leeuw no other children are known.
Rachel…