Sara van Bever, a daughter of Samson van Bever and Sientje Smeer, married Louis van Velzen on 30 July 1919 in Amsterdam, a son of Isaac van Velzen and Schoontje Grijsaart. The couple had three children: Isaac, Samson and Schoontje. Isaac was killed in Mauthausen on 17 July 1942. Together with his parents, Samson was killed in Sobibor on 16 April 1943. Schoontje lost her life, also in Sobibor, on …