Franz Siegmund Eisner was a son of Heinrich Eisner and Fanny Unger. See for more information: Persoonlijkheden in het Koninkrijk der Nederlanden in woord en beeld : Nederlanders en hun werk (Amsterdam 1938) 425-426
Harriet Charlotte Eisner (06.08.1894 in Berlin) was a music teacher and prior to her deportation lived in the same building, if not same apartment, as Franz and family. She was deported on 26.09.1942 from Berlin to the killing site Raasiku-Reval, where she perished. (Berliner Gedenkbuch)