Jón Þorsteinn Gíslason was born in the Þingvalla settlement in Saskatchewan on December 18, 1891. He had the name Jón Th. Bíldfell in the west.
Spouse: Guðrún Torfadóttir b. April 25, 1892 in N. Múlasýsla.
Children: 1. Gísli b. September 19, 1916 2. Jóhann Torfi b. July 18, 1918 3. Valgerður b. July 20, 1920 4. Ögmundur Jón v. November 19, 1922 5. Albert b. August 19, 1924 6. Kristinn Jón b. November 6, 1926 7. Ólafur b. March 18, 1929 8. Lawrence b. February 18, 1931 9. Stefan Clarence b. February 21, 1933 10. Marvin b. August 1, 1935.
Jón was the son of Gísli Jónsson and Valgerður Eiríksdóttir, pioneer settlers in Foam Lake, Saskatchewan. Jón’s grandfather was Jón Ögmundsson from Bíldsfell in Árnessýsla, who came west with his wife and children in 1887. Jón Ögmundsson took his father’s last name of Bíldfell in the west. Jón Þorsteinn came west with his parents to Fishing Lake in the Lakes settlement (Vatnabyggð) in 1892 and took land near Foam Lake in 1894. He took over his father Gísli’s farm in 1929.