Abraham Bierschenk was a son of Jacob Bierschenk and Aaltje Boas. He married Matje Haagman in 1904 in Rotterdam.
Addition of a visitor of the website
In addition, a Jokos file (number 005497) on this household is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.