Clara Hilversum was a daugter of Manuel Hilversum and Grietje Frank. She was a seamstress and lived not anymore at home. She was unmarried.
Beside the deceased baby-sister, all other siblings have been killed during the Holocaust: she self, Johanna, Salomon, Lena, Hartog (and his wife Rachel de Meza), Bertha and Jacob.
City Archive of Amsterdam, archive card of Manuel Hilversum and Clara Hilversum.
Biography