Isaac Ritmeester was the second of the seven children of Jechiel Ritmeester and Elisabeth Brandon. He was unmarried and lived at home with his parents at Lepelstraat 2, 2nd floor, in the old center of Amsterdam.
On 19 July 1942, the then 26-year-old advertising painter Isaac Ritmeester, together with his twin sisters Rosa and Esther, had to prepare for transport from Amsterdam Central Station to W…