| 1. | Benjamín Gudmundson (twin): 1879-1941 married Juliana Thorsteinsson, 10 children |
| 2. | Guðmundur (twin): 1879-1879 (died as infant) |
| 3. | Guðmundur (Mundi) Gudmundson: 1880 - 1941 married Sella Ingjaldson, 6 children |
| 4. | Ingibjörg Ágústa Gudmundson: 1881 - 1937 (remained in North Dakota) married Johannes Magnusson, 8 children |
| 5. | David Jóhannes Gudmundson: 1884 - 1960 married Sigurbjörg (Sigra) Sigurdson, 11 children remarried Sigurlaug (Loa) Olafson |
| 6. | Guðrún Þórdís Gudmundson: 1887 - 1981 married John Gillis Thompson, 8 children |
| 7. | Kristin (Stina) Gudmundson: 1891 - 1981 married Pétur Kristjan Bjarnason, 4 children |
| 8. | Þurídur (Thuridur) Steinnun Gudmundson: Jan 8, 1892 - Oct 14,1974 married Sveinn Eyjolfson, 7 children |
| 9. | Sigurbjartur (Siggi) Gudmundson: 1898 - 1986 married Valgerður (Valla) Eyjolfson, 3 children |
Grandchildren of Pétur and Guðrún were 58.