Stefanía Jóna Sigurjónsdóttir was born on July 18, 1886 in Lincoln County in Minnesota. She died in Sacramento, California on April 23, 1958. She had the name Stefania Jona Swanson in the west.
Spouse: Archie Samuel Mongeay b. January 11, 1885 in Illinois, d. November 14, 1959 in California.
Children: 1. Donald Adelor 2. Arlaine 3. Elaine 4. Jo Ann 5. Kenneth 5. Doreen b. October 25, 1922, d. February 25, 1946 6. Noreen b. October 25, 1922, twin, d. February 14, 1944 7. Bernadette b. 1926, d. 1928. All born in Minnesota.
Stefanía was the daughter of Sigurjón Svanlaugsson and Elísabet Jónsdóttir, who settled in the Lincoln County Settlement in Minnesota in 1880. Sigríður and Archie lived in Green Valley in Lyon County, but later moved to California.