Born ‎4- May 1915 Winschoten, netherland, died ‎30-9-1944 Central Europe‎, 28 or 29 years. Son of Isidore de Beer/ Boasso and Maria Norden - Ries‏

‎1st marriage/ related to: Olbert de Beer - Norden, ‎2nd marriage/ related to: Albert Leijdesdorff - van Os. Daughter of Andreas Hertzberger - Hartogensis and Selma Roos - Ossedrijver‏