Sara den Hartog was a daughter of Simon den Hartog and Steintje den Hartog, a family of seven children, namely Abraham, Hartog, Marianna, Anna, Elias, Henriette and Sara self. There was also a stillborn daughter in 1879. Sara married Salomon den Hartog on 31 October 1906 in Zwijndrecht, a son of Tobias den Hartog and Jetje den Hartog. Jetje and Elisabeth were her daughters.
City Archive of Rotterdam, family registration card of Salomon den Hartog; website www.wiewaswie.nl and an addition of a visitor of the website.
The funeral records at the Jewish cemetery in Rotterdam reveal that Sara den Hartog was buried there.
.