Born ‎17-1-1868 Amsterdam, Netherland‎. Son of Mozes Leon Helmstadt - Gans and Saartje van Praag - Pijl‏

Born ‎10-6-1870 Amsterdam, Netherland, died ‎16-4-1933 Amsterdam, Netherland‎, 62 or 63 years, ‎1st marriage to: Abraham Salomon Rubens/ van Tij, ‎2nd marriage to: Salomon Helmstadt - van Praag. Daughter of Hartog Moses Hakker/ Koo and Aaltje Alexander Springer/ Minnenkenhof‏