He was born in Spydeberg as a son of director Wilhelm Fredrik Hiorth (1850–1923) and Konstanse Hansen (1856–1943).
He was married to stenographer Dagny Munthe Aalheim from 1915, later to actress Lydia Marie Opøien.
[5] He was interested in theatre, and wrote the children's comedy Peik og stortrollet which was staged at Nationaltheatret in 1922.
[1][6] Peik og stortrollet premiered on 23 December 1922, and run for a total of 29 performances until 18 February 1923.
[4] His student's comedy Paa Hybelen, first staged in Spring 1900, was met with enthusiasm from the public, but not by the critics.