Petrína Guðnadóttir was born on November 11, 1865 in N. Múlasýsla. She died in Grand Forks, N. Dakota on January 9, 1912.
Spouse: 1881 Jón Valdimar Þorláksson born in S. Þingeyjarsýsla on November 3, 1851. He died in Winnipeg on October 26, 1924.
Children: 1. Páll d. in youth 2. Lovísa (Louisa) Guðfinna b. October 10, 1884 3. Valdimar Steingrímur b. November 24, 1886 4. Guðný Pálína b. September 7, 1888 5. Þorlákur Gunnar b. September 12, 1890 6. Þórunn Laufey b. February 19, 1892 7. Grace Mabel b. December 19, 1894 8. Ester Aurora b. November 13, 1896 9. Inga Marín b. May 5, 1899.
Jón came west to Milwaukee, Wisconsin in 1873 with his parents, Þorlákur G. Jónsson and Lovísa Níelsdóttir, and his sister. He travelled with them to the Ljósavatns colony in Shawano County in 1875 and then west to N. Dakota around 1880. Petrína came west to New Iceland in 1876 with her mother, Guðfinna Jóhannesdóttir, and her stepfather, Sigurgeir Björnsson. They lived there until 1880, then moved south to N. Dakota. Jón and Petrína lived southwest of Mountain.