Jetje Hakker was a daughter of David Hakker and Sara Poons. She was the widow of Salemon Samuel Prins. They had at least two children: Hartog (with whom she lived) and Duifje.
Stadsarchief Amsterdam, archiefkaarten Jetje and Hartog Hakker; Haags Gemeentearchief, overlijdensakte Duifje Prins
Biography