Isaac Polak a son of Raphael Polak and Judic Isaac Lewijt. He married in Amstkerdam on 26 May 1926 to Catharina Lisser, daughter of Alexander Lisser and Vogeltje Cohen.
The couple had two children. The family lived at 8 Kerkstraat in Bussum. They were forced to move to Amsterdam. They went into hiding in Amsterdam at 191 Lijnbaansgracht. They were caught there on 21 March 1944 and a few items of j…