See also

• Otto KOFSTAD's parents: Nels Christensen KOFSTAD (1828-1916) and Eli JOHNSDTR (1840-1876)
• Otto KOFSTAD's siblings: Christena KOFSTAD (c. 1861- ), Johan KOFSTAD (1863-1934), Ingebord Randina KOFSTAD (1865-1950), Elene KOFSTAD (1866- ), Nels Peter KOFSTAD (1868-1939), Bertha Maria KOFSTAD (1870-1922) and Nina KOFSTAD (c. 1875- )