Background
He was born in Vågan as a son of vicar Wilhelm Christian Magelssen (1867–1930) and Sigrid, née Rynning (1874–1957).
He was born in Vågan as a son of vicar Wilhelm Christian Magelssen (1867–1930) and Sigrid, née Rynning (1874–1957).
He finished his secondary education in 1936 and took the candidate.theol.
Degree at the University of Oslo in 1941. He was hired as a secretary for the Norwegian Christian Youth Association in 1941, then secretary for the Norwegian Universities and Schools Christian Fellowship in 1943. He became secretary-general here in 1947, followed by a stint as secretary-general of the Norwegian Christian Youth Association from 1954 to 1965.
This organization later changed their name to Young Men’s Christian Association-Young Women’s Christian Association of Norway.
He was also dean in Asker and Bærum during this period. Among others he became known for refusing to greet newly hired, liberal curate Helge Hognestad in Høvik.
He resided at Slependen. He died in June 2013.
Magelssen chaired the Norwegian Christian Youth Association from 1970 to 1979 and was a board member of the Norwegian Association of Clergy, Norwegian Church Aid, council member of the Diocese Council of Oslo from 1974 to 1982, Statens Ungdomsråd and the MF Norwegian School of Theology.