Norwegian medieval Latin literature was in its prime in the latter half of the 12th century. A number of Latin works on Norwegian history came into existence. In this interdisciplinary collection of articles, there is a presentation of these works and their backgrounds, and the correlation between the Latin and the Norse tradition is examined. Of central importance in the book is the cult of Olav the Saint whose seat was the cathedral in Trondheim (Nidaros). The development of the Legend of St. Olav and the collection of miracles belonging to it are discussed by specialists of various professions from different points of view -- liturgical, religious historical, sociological, philological and literary.