Abraham was the son of Gerrit Hamburger and Rachel Frohman.
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Abraham Hamburger's family moved from Roermond to Aalten in 1928 and from Aalten to Hoogezand in 1936.
Abraham Hamburger, known as Bram, lived from 15 February 1940 until 22 July 1942 at the Jewish youth farm established in 1937 for Palestine Pioneers in Gouda, the villa Catharinahoeve on over two hectares of land. He moved to Keppel.
F. van der Straaten, Om nooit te vergeten. Herinneringen en belevenissen aan/van Palestina-Pioniers gedurende de oorlogsjaren 1939-1945 (Mijnsheerenland s.a.) 164, 213
This person is commemorated on a memorial in Roermond. More information on this memorial can be found (in Dutch) on the website of the Nationaal Comité 4 en 5 mei.