When Marie Elisabet Wegner Thomasdatter was born on 9 August 1885, in Karmøy, Rogaland, Norway, her father, Thomas Waage Olsen, was 25 and her mother, Gjertrud Kristine Knutsdatter Hausken, was 21. She married Knut Mathias Endresen in 1906, in Torvastad, Karmøy, Rogaland, Norway. She died on 19 June 1964, in Torvastad, Karmøy, Rogaland, Norway, at the age of 78.