Sibilla van Geldere was the youngest of the three children from the second marriage of Hartog van Geldere to Josephine Mendel. Sibilla was born on 15 October 1906 in Den Haag, she worked as a maid and she was unmarried.
Sibilla’s father Hartog, who got married on 15 July 1907 in Hannover for the 2nd time to Josephine Mendel, passed away in Den Haag on 2 June 1923. On 19 February 1925, Sibilla left…