Abraham is een zoon van Levi Abraham Hartz (Harderwijk, 4 okt 1868) en Roosje Stouwer (A'dam, 16 feb 1877). Hij trouwde 12 december 1923 met Sara Zilverberg (A'dam, 26 maart 1901).
Kinderen
Kind, 1926
Kind, 1935
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Bron SAA archiefkaart Abraham Hartz 26-11-1898
According to a list with shops of Jewish owners, compiled by the Amsterdam police in 1940, this family had a grocery store, address: Kerkstraat 391 in Amsterdam.
Abstracts of the police archives which are currently at the Amsterdam municipal archives