 Izaak Plas - SpeijerBorn 9- jan 1842 Amsterdam, Netherland. Son of Joseph Aron Plas and Beletje Leendert Speijer Married 22-10-1862 Amsterdam, Netherland (40 or 41 years married) to:  Saartje Mock - FrijdhoffBorn 19-7-1834 Amsterdam, Netherland, died 13-2-1903 Amsterdam, Netherland, 68 or 69 years. Daughter of Moses Hermanus Mock- Gold and Rachel Eliazer Frijdhoff - Polak Children: | |||
1) Mozes Plas - MockBorn 3- apr 1866 Amsterdam, Netherland, died 6- mar 1923 Amsterdam, Netherland, 56 years. Occupation: Diamond industry | |||
2) Joseph Plas - MockBorn 14-5-1870 Amsterdam, Netherland, died 3-12-1942 Auschwitz-Biala Podleska, Poland, 71 or 72 years | |||