Jón Eyjólfsson was born on January 1, 1849 in S. Múlasýsla. He took the name John E. Johnson in the west. He died on April 9, 1935 in Minneapolis.
Spouse: 1) María Ingibjörg Jónsdóttir b. 1852 in S. Múlasýsla, d. 1888 in Lincoln County 2) 1897 Sigurbjörg Árnadóttir b. October 23, 1860 d. April 27, 1931.
Children: With María: 1. Sigríður (Sarah) b. 1876 2. Jón Einar b. 1878, d. January 16, 1882 3. John William b. 1879 4. Margaret b. 1881 5. Einar b. 1883 6. Eyjólfur b. 1885, d. 1888 7. Louise Marie b. June 29, 1888, d. February 2, 1891. With Sigurbjörg: 1. Marie Ellen b. March 17, 1898 2. Stephen b. 1899 3. Jóna Sigurbjörg b. June 3, 1901.
Jón and María emigrated west to Lincoln County, Minnesota in 1883. Sigurbjörg married Árni Magnússon and they emigrated west to Lincoln County, Minnesota together with her mother, Guðrún Jónasdóttir, in 1889.