Born ‎15-3-1899 Groningen-Groningen, Netherland, died ‎7-10-1970 Amsterdam, Netherland‎, 70 or 71 years. Son of Benjamin Willem van Dam/ Vellema and Elizabeth Marcus/ Israe‏

Born ‎7- Sep 1895 Utingeradeel, Netherland, died ‎30-8-1984 Amsterdam, Netherland‎, 88 or 89 years