Born ‎1866, died ‎27-7-1907‎, 40 or 41 years. Son of Emanuel van Witsen/ Salomon and Betje Hes/ Altijdwer‏

Born ‎2- May 1883 Rotterdam, Netherland, died ‎2- Jul 1943 Sobibor-Biala Podleska, Poland‎, 60 years, ‎1st marriage/ related to: Joseph Bak - de Groot, ‎2nd marriage to: Isaac van Witsen - Hes. Daughter of Joseph van Witsen/ He and Judic Meijer Hofstede - Bloemhof‏