Jacob Ritmeester lived with his parents and his brother Maurice at the Nieuwe Herengracht 109 house in Amsterdam.
Jacob Ritmeester was killed in concentration camp Buchenwald and cremated. The urn with his ashes was placed on the Jewish cemetry in Diemen on 25 July 1941.
Lijst van in de concentratiekampen Westerbork en Buchenwald overleden Joodsche Personen die op Nederlandsche begraafplaatsen ter aarde werden besteld; NIOD, archief Westerbork, port. 1, map 1
Biography