Isidore Brandon was arrested on April 17, 1942 and stood trial (with eight others) before the Special Court on September 10, 1942. Brandon was sentenced to six months in prison, minus pre-trial detention. According to a letter from the “Justizoberinspektor” to the Security Police (Sicherheits Dienst), he is serving his sentence in the German penitentiary at Wolvenplein in Utrecht, ending on October 17, 1942, and can then be picked up. In a later letter it is stated that he was indeed transferred to the Sicherheits Dienst (SD) after completing his sentence. Where he then was taken is unknown, but two weeks later, on November 7, 1942, he was registered in Westerbork.
Isidore Brandon was sentenced to prison in 1942 for listening to banned stations. Process files at NIOD Amsterdam, archive 020, inventory numbers 5474 and 6140.