Jansje Dekker was the first born child of Levie Abraham Dekker and Rebecca van Vliet. She was unmarried.
Jansje was born into a family with in total seven children. Her brother Elias died in 1929 but her brothers Abraham, Salomon (called Leo) and Jacob survived the Holocaust. Her sisters Johanna and Emma have been killed in the Shoah.
Jansje lived in Amsterdam at Plantage Doklaan but spent much t…