Clara Emden was a daughter of Joost Emden and Jansje Canes. This couple had eight children, of which seven did not survive the Holocaust: Fijtje, Benjamin, Mietje, Hijman, Abraham en Vogeltje.
Clara married in Amsterdam on 21 Februari 1912 to Salomon Groente .
Genlias and City Archive of Amsterdam, archive card of Clara Emden and family registration card of Joost Emden.