Stefán Guðmundur Þorsteinsson was born in N. Þingeyjarsýsla in 1874. He died in Manitoba on March 1, 1921. He took the last name Johnson in the west.
Spouse: November 23, 1914 Sigrún Vilfríður Þorsteinsdóttir b. in the Fljóts (Icelandic River) settlement in New Iceland on June 16, 1891.
Children: 1. Lilja b. July 23, 1915 2. Vilbert b. July 23, 1915, twin 3. Þorsteinn b. March 29, 1917 4. Guðrún b. July 14, 1920.
Stefán was the son of Þorsteinn Jónsson and Guðrún Bjarnadóttir, who came west in 1879 and settled in New Iceland. They moved from there in 1881 to the Argyle settlement in Manitoba. Stefán grew up there and became a farmer in Cypress River (Brú settlement) in Manitoba. Sigrún was the daughter of Þorsteinn Eyjólfsson and Lilja Hallsdóttir who lived in the Fljóts settlement in New Iceland.