https://www.joodsmonument.nl/en/page/32231/johanna-hermine-biegel
https://research.annefrank.org/en/personen/3b1976a2-6752-4e40-8665-c552a3699b8d/
Johanna Hermine Biegel (1889 - 1943) - Genealogy (geni.com)
Sister: Rebekka Biegel
See: