He was a brother of poet, translator and author Halldis Moren Vesaas (1907–1995).
He worked for Gyldendal Norsk Forlag and later as rector of Elverum Folk High School from 1956.
He debuted as a children's book author and won the Dammprisen in 1953.
Among his children's books were Dimmi får venner from 1952, and Nattegjester på Jonsvangen from 1957.
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