Abraham Frieser was a son of David Frieser and Christina Susanna Bekker. He married in 1907 in Rotterdam Roosje Melkman. In this marriage seven children were born, of whom Fennij, Joseph, Salomon and Jaantje were killed in Auschwitz. There was also this little son Hartog, born in 1912, who died in 1912, only 8 moths old. Hendrika Kokernoot was his second wife. Matthijs was a son from this marriage.
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