She grew up in the Norwegian capital, Oslo (or Kristiania, as it was known until 1925). When she was only 11 years old, her father, the Norwegian archaeologist Ingvald Martin Undset (1853–1893), died at the age of 40 after a long illness.
She grew up in the Norwegian capital, Oslo (or Kristiania, as it was known until 1925) When she was. only 11 years old, her father, the Norwegian archaeologist Ingvald Martin Undset (1853–1893), died at the age of 40 after a long illness.