Joseph van Loggem was a son of Jonas van Loggem and Saartje Walg. He married 4 November 1931 in Amsterdam to Bloeme Cohen, a daughter of Mozes Cohen and Mietje Vischschraper.
Joseph had eight siblings, of whom one has survived the war. His other siblings , who also have been killed during the Holocaust were Rebecca, Jacob, Levie, Rozette, Samuel, Max and Hartog.
City Archive of Amsterdam, family …