Nathan Hoepelman, a son of Jacob Hoepelman and Rachel Cohen, married 18 November 1936 in Amsterdam to Judith Koopman, a daughter of Levie Koopman and Rachel Zak.
City Archive of Amsterdam, archive card of Judith Koopman and Nathan Hoepelman .
In addition, a Jokos file (number 20764) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.