He was head of the Danish Árni Magnússon Institute for Icelandic Studies from 1927 to 1972 and professor of Icelandic studies at the University of Copenhagen from 1929 to 1969. He made significant contributions to his field.
He served as head of the Árni Magnússon Institute for Icelandic Studies from 1927 to 1972 and professor of Icelandic studies at the University of Copenhagen from 1929 to 1969. He made significant contributions to his field of study.