 Lea Blaaser - Costa da FonsecaBorn 25-7-1888 Amsterdam, Netherland. Daughter of Samuel Blaaser and Rebecca Costa da Fonseca Married to:  Joseph van Praag - PolakBorn 8- Apr 1878 Amsterdam, Netherland, died 4- Jun 1943 Sobibor-Biala Podleska, Poland, 65 years. Son of Simon van Praag - Rodrigues de Mercado and Sara Polak - Simons | |