Barend van Bever was a son of Simon van Bever and Schoontje Roeg. He was not married. City Archive of Amsterdam, archive card of Simon van Bever and Barend van Bever.
In addition, a Jokos file (number 14615) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.