David Mozes Polak was one of the two sons of Mozes Polak (1867-1930) and Clara Rosenbaum. His father remarried, after becoming a widower, to Sara van Rooijen (Amsterdam, 3 augustus 1874 - Sobibor, 5 maart 1943). David and his parents ran a secondhand shop in the Papenstraat in Deventer. His brother …
In addition, a Jokos file (number 55652) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.