Jón Jónsson was born in S. Múlasýsla in 1866. He died in Elfros on March 24, 1934.
Spouse: 1) Guðfinna Halldórsdóttir b. 1869 2) Arndís Guðmundsdóttir b. March 6, 1880.
Children: With Guðfinna: 1. Guðjón b. 1894 2. Sigríðir Ásdís b. 1895 3. Halldór b. 1898. With Arndís: 1. Guðfinna Margrét b. October 27, 1904 2. Guðmundína Anna b. February 25, 1908 3. Sigurður Árni Edward b. April 24, 1910, d. April 4, 1963 4. Bjarnveig Guðrún Helga b. August 6, 1912 5. Árni Jóel b. 1914, d. 1916 6. Jóhanna Árný Jakobína b. September 22, 1916 7. Stefanía Sigurlaug b. March 22, 1919 8. Erlendína Jónína b. December 12, 1921, d. August 15, 1975 9. Júlíana Svanhvít b. July 31, 1924 10. Frederick Helgi Franklin b. April 10, 1929 11. Sæbjört Sigríður b. August 16, 1925.
They came west to Winnipeg, Manitoba in 1903 and first lived in the Argyle settlement. From there they moved to the Lakes settlement (Vatnabyggð) in Saskatchewan and lived in the Elfros community.