Hartog Waterman, born on 8 August 1880 in Amsterdam, was a son of Meijer Waterman and Sara van Praag. He married on 14 May 1903 Heintje Granaat, who was born on 24 January 1876 in Amsterdam as a daughter of Joseph Jonas Granaat and Betje de Jong. The couple had three children, namely Meijer in 1904, Jonas in 1906 and Betsie in 1909. Jonas and Betsie survived the Holocaust but Meijer and his parent…