 Clara de LeonBorn ± 1797 Amsterdam, Netherland Married 25-5-1825 Amsterdam, Netherland (40 or 41 years married) to:  Rehuel Lobatto/ da CostBorn 6- jun 1797 Amsterdam, Netherland, died 1866 Delft, Netherland, 68 or 69 years. Occupation: Mathematician. Son of Isaac Cohen Lobatto and Ribca da Costa | |||