Medievalist with interests in modern areas, especially van Gogh; museum curator. Nordenfalk studied at the university in Uppsala between 1926-1928 and Göteborg University 1928-1929 for his doctorate. He was appointed assistant curator at the museum in Göteborg, Sweden in 1935. Several articles on Insular (British Isles) illumination appeared in the early and mid 1930s. His Ph.D. was awarded in 1938 with a dissertation topic on illuminated manuscript canon tables, decorated borders surrounding Gospel concordences constructed by Eusebius of Ceasarea.

Director of the Stockholm Museum for Modern Art Centre Georges Pompidou in Paris, 1974-1981. He curated the show for the Museum of Modern Art, NY, The Machine as Seen at the End of the Mechanical Age in 1968.

Medievalist and first professor of art history at Stockholm University. Roosval was raised by successful middle-class parents in Stockholm, his father Consul John Roosval and mother Johanna Kramer. He entered Uppsala University in 1897 completing a degree in philosophy, languages, art history and Scandinavian philology in 1899. Roosval moved to Berlin to tutor Rolf de Maré, the son of Swedish military attaché there, Henrik de Maré.

Scholar of Italian Trecento but more notably one of the early Western scholars and collectors of Oriental art; professor of Fine Arts at Stockholm University, 1908-1925 and Keeper of Painting and Sculpture, National Museum in Stockholm, 1928-1944. He was born in Helsinki, Finland, which is formerly part of Russia. Sién studied at the University in Helsinki under J. J. Tikkanen, receiving his Ph.D. in 1900.