Wilhelmina Blok was a daughter of Samuel Blok and Helena de Winter. She lived in 1934 on the Houtkade 14 in Vlissingen. From the end of 1940 she lived on Park de Griffioen 2 in Middelburg and from March 1942 at the Latijnse Schoolstraat 13 a in Middelburg. In July of the same year she moved to Mauritsstraat 8 bhs in Amsterdam.
Stadsarchief Amsterdam, archiefkaart Wilhelmina Blok