Magnús Halldórsson was born in 1876 in Iceland.
Spouse: Vilhelmína Björg Árnadóttir b. December 28, 1874 in N. Múlasýsla
Children: 1. Guðrún Matthildur b. November 29, 1900 2. Árni Ólafur b. February 27, 1902 3. Pálína f. b. April 5, 1904 4. Sigríður (Sigrid) b. August 17, 1906, d. 1918 5. Magnús Burke b. July 2, 1908 6. Haraldur (Harold) b. November 11, 1910 7. Karólína (Caroline) Guðlaug b. June 13, 1913 8. Ólöf b. October 14, 1915.
Western resources say Magnús came to America in 1883, but with whom is unknown. He is listed as a farmer in McHenry County, N. Dakota in the second decade of the 20 century, but in 1920 he is listed in Mountain with a wife and children. In 1930, the family lived in Upham where Magnús was a hotel manager. Later, they lived in Minneapolis, Minnesota. Vilhelmína came west in 1883 with her parents, Árni Jónsson and Matthildur Pálsdóttir, who settled in the Sand Hills Settlement in N. Dakota.