When Ingrid Hervor Giselson Helmstein was born on 9 August 1921, in Södertälje, Stockholm, Sweden, her father, Lars Gustaf Harry Helmstein, was 41 and her mother, Ingrid Olivia Åhrberg, was 35. She married Staffan Samuel Ljungdahl on 23 August 1941, in Johanneberg, Västra Götaland, Sweden. She lived in Göteborg Gustavi Dom, Göteborg och Bohus, Sweden in 1921 and Brevik, Lidingö, Stockholm, Sweden in 1941. She died on 24 January 2009, in Spånga, Stockholm, Sweden, at the age of 87.