Mietje Mug was the youngest of the three children of the deaf and dumb couple Isaäc Mug and Esther Brilleman. She was born on 19 February 1923 in Rotterdam and lived at home with her parents and brothers Abraham and Meijer, who were born respectively in 1917 and 1919.
Possibly the care for the parents was too heavy and on 19 August 1931 the 8-year old Mietje was placed with her grandparents Mijer …