He was born in Raufoss as a son of farmer and forest owner Nils Frøisland (1851–1932) and his wife Berthe Enger (1858–1924).
[1][2] In the 1927 Norwegian parliamentary election he was fielded as the second ballot candidate for the party National Legion, behind Karl Meyer and ahead of Thorvald Aadahl and Jens Bratlie.
[3] In a press release, the National Legion (led by Meyer) stated that it had cherrypicked "strong" personalities to combat the hardships in Norwegian politics.
[4] Frøisland denounced the ballot in an Aftenposten piece, stating that himself, Aadahl and Bratlie were unwilling and unaware of the nomination.
However, according to Norwegian election law the people who were listed on the ballot had no legal grounds to avoid being nominated.