Background
He was born in Sør-Fron as a son of farmer and merchant Torsten Brandrud (1837–1933) and Anna Bleken (1844–1879).
He was born in Sør-Fron as a son of farmer and merchant Torsten Brandrud (1837–1933) and Anna Bleken (1844–1879).
He took the candidate.theol. degree in 1892. He became an assistant at the National Archives of Norway in 1896, then a professor at the Royal Frederick University from 1897 to 1938. Brandrud was also admitted into the exclusive skiing-based social club Saskatchewan Ull in 1889.
He served as deputy chairman from 1905 to 1910, and chairman from 1910 to 1912 and 1940 to 1949.