Duifje Blom was a daughter of Salomon Blom and Hendrika Kosman, who had a family with ten children: Duifje herself, Hartog, Elisabeth, Israel, Nathan, Rachel, Samuel, Barend, Machiel and Greta, who survived the Holocaust.
Duifje married in Amsterdam on 16 January 1901 to Salomon Schelvis, age 18, so…