Halldór Jónsson was born in W. Skaftafellssýsla on March 1, 1856. He died in Cleveland, Utah on June 15, 1924.
Spouse: 1) 1879 Guðrún Jónsdóttir b. June 4, 1850 in Kjósarsýsla, d. April 25, 1939 in Price, Utah. They divorced. 2) March 25, 1885 Margrét Magnúsdóttir b. November 20, 1856 in Kjósarsýsla, d. June 15, 1924 in Cleveland. They divorced. 3) 1913 Jónína Ásgrímsdóttir b. February 25, 1885 in Borgarfjarðarsýsla.
Children: With Guðrún: 1. Jóhann b. October 2, 1879 in W. Skaftafellssýsla, d. May 17, 1954 2. Margrét Catherine b. August 12, 1882, d. February 28, 1957 3. Barney Andrew b. August 12, 1882, twin 4. Halldór Jacob b. January 26, 1883, d. September 4, 1884 5. Dómhildur Sarah b. October 20, 1886, d. May 31, 1888 6. Gróa b. December 27, 1890, d. September 16, 1924 7. Albert b. November 18, 1893, d. March 27, 1945. With Jonina 1. Svava 2. Laufey.
Halldór and Guðrún emigrated west to Utah in 1881 with little Jóhann and settled in Spanish Fork. After a few years, they moved to Emery County, not far from Cleveland, and lived there. Halldór became a Mormon missionary and made two trips to Iceland; the first 1899 to 1901 and the latter 1910 to 1913.