Ohlmarks was born in Kristianstad, Sweden and was the son of wholesaler Joel Ohlmarks and Anna-Lisa Larsson. He earned a Licentiate of Philosophy degree in 1935 and a Doctor of Philosophy degree in 1937. Ohlmarks was Swedish lecturer in Tübingen from 1933 to 1934 and in Reykjavík from 1935 to 1936. He was docent and associate professor in the Swedish language in Greifswald from 1941 to 1945. Ohlmarks was director of Europafilm's manuscript department from 1950 to 1959, visiting professor in Zürich in 1965 and head of the Institut für vergleichende Felsbildforschung in Rheinklingen in 1966. He was also a co-worker of the Die Tat in Zürich from 1966. He was chairman of the Association of Nordic Philologists in Lund from 1931 to 1934 and of the Academic Society for the Swedish-Baltic Cooperation from 1938 to 1940. Ohlmarks was secretary in the Science of Religion Coummunity in Lund from 1936 and the community Ad patriam illustrandam in 1963.
Ohlmarks translation of Tolkien's The Lord of the Rings was strongly disliked by the author, prompting him to compile his Guide to the Names in The Lord of the Rings. Ohlmarks not only invented many expression of his own, but also took great liberties with the contents of Tolkien's work, both by shortening many parts of it and by inserting his own interpretations. Tolkien was also dissatisfied by the title Sagan om ringen, "The Saga of the Ring". As a result of the severe criticism directed against his translation of The Lord of the Rings, both by Tolkien himself and by Swedish Tolkien fandom, Ohlmarks in the late 1970s began to display hostility towards the "Tolkien phenomenon", and in 1982 published a book titled "Tolkien and Black Magic," expounding a conspiracy theory connecting Tolkien and Tolkien fandom with Nazi occultism. Despite the criticism and controversy, Ohlmarks's translations remained the only Swedish-language translations of The Lord of the Rings until 2004.
Personal life
In his second marriage, in 1954, he married Letty Steenstrup, the daughter of Erling Steenstrup and Ruth Strandnaes. In his third marriage, in 1969, he married editorial assistant Monica Suter, daughter of Adolf Suter von Schwyz and his wife. Ohlmarks died in 1984 in Crist di Niardo, Brescia, Italy.
Publications
Academic
1936, Isländska hov och gudahus, in: Bidrag till nordisk filologi tillägnade Emil Olson den 9 juni 1936, S.339-355.
1937, Heimdalls Horn und Odins Auge. Studien zur nordischen und vergleichenden Religionsgeschichte, Erstes Buch Heimdallr und das Horn, Lund.
1939, Studien zum Problem des Schamanismus, Lund.
1939, Anmärkningar och genmäle angående Heimdall, in: Arkiv för nordisk filologi 54, S. 354-363.
1939, Arktischer Schamanismus und altnordischer Seiðr, in: Archiv für Religionswissenschaft 36, S. 171-180.
1941, Stellt die mythische Bifrost den Regenbogen oder die Milchstrasse dar? Eine textkritisch-religionshistorische Untersuchung zur mythographischen Arbeitsmethode Snorri Sturlusons,, Lund.
1941, Das Grabschiff. Studien zur vorgeschichtlichen nordischen Religionsgeschichte, i: Zeitschrift für systematische Theologie 18, S. 150-158.
1943, Studien zur altgermanischen Religionsgeschichte. 4 Aufsätze, Leipzig.
1943, Die klassischen Isländersagas und ihr Ehrbegriff, in: Grundmann, Walter, Die völkische Gestalt des Glaubens, Leipzig, S. 157-220.
with Lars Åkerberg, Thomas Thorild als Vorläufer der neuzeitlichen Religionswissenschaft, Greifswald.
1944, Alt-Uppsala und Urnes. Untersuchung zur Entstehung der Dreischiffstabkirche und des ältesten germanisch-heidnischen Kulthauses,, Lund.
1944, Alt-Uppsala und Arkona, in: Vetenskapssocieteten i Lund, Årsbok 1943, Lund, S. 79-120.
1945, „Toalettredskapen“ och solreligionen under yngre bronsåldern, in: Fornvännen 40, S. 337-358.
1946, Gravskeppet. Studier i förhistorisk nordisk religionshistoria, Stockholm.
1963, Hällristningarnas gudar. En sammanställning och ett förklarningsförsök, Stockholm.
1979, Vårt nordiska arv. från 10.000 f.Kr. till medeltidens början, Stockholm.
Autobiographical
I paradiset. Levnadsminnen I, Uddevalla.
Doktor i Lund. En bok om akademiska intriger, Stockholm.
Efter mig Syndafloden. Greifswald-Berlin-Hamburg 1941-1945, Köping.
Literature
Fritz Heinrich,, Das religionswissenschaftliche Institut der Ernst Moritz Arndt-Universität Greifswald 1944-1945, in: Zeitschrift für Religionswissenschaft 5, S. 203-230.
Fritz Heinrich,, Die deutsche Religionswissenschaft und der Nationalsozialismus. Eine ideologiekritische und wissenschaftsgeschichtliche Untersuchung, Petersberg.