Øyulv Gran frequently wrote under various pseudonyms including: Øivind / Øyvind Grundt, Brynjulf Bagge, Alf Ottar Karlsrud Rakstad, and Stein Winge.
He is most associated with the stories he wrote which appeared in the magazine Detektiv-Magasinet about the fictional Oslo detective Knut Gribb.
In 1908, Norwegian and author Sven Elvestad had created the fictional police detective Knut Gribb.
Starting in the 1970s, increasingly Øyulv Gran's presentation formed the basis for public perception of Knut Gribb .
[1] Many of his stories were published as books as well, including Svindler-syndikatet (1972), Mannen bak masken (1976) and Nattens konge (1985).