Martha Rosenbaum was a daughter of Itzig Rosenbaum and Mietje Karseboom. She married Simon van Dam in 1887 in Zuidlaren.
Addition of a visitor of the website
In addition, a Jokos file (number 54266) on this person is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.