Norwegian historian, scholar, and co-founder from the Norwegian Nationalist School of Historiography. In 1970, he released a function entitled The Melody Custom of Tristan da Cunha, and he also translated thirteenth-century Norse books. He studied laws on the Royal Frederick School in Oslo, Norway. Through the Norwegian nationalist period, he released a reserve of Norse mythology. He was the kid of Edvard Surprise Munch and Johanne Hofgaard. He was the uncle of acclaimed painter Edvard Munch.