Jacques Heilbron was a son of Emanuel Heilbron and Fijtje Fierlier. He married in Amsterdam on 13 September 1933 to Sientje Emden. The couple had one daughter, who aswell as her mother, survived the Holocaust.
City Archive of Amsterdam, archive card of Jacques Heilbron.
In addition, a Jokos file (number 2472) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.