The novel “Magnus, the Danish Prince” by the Russian diaspora in Latvia writer Roald Dobrovensky is seen as a specific example of a biographical and historical genre, which embodies the historical experience of different eras and nations in the confrontation of globalisation and national self-determination. At the heart of the novel are the Livonian War and the historical role and human destiny of Magnus (1540–1683) – the Danish prince of the Oldenburg dynasty, the first and the only king of Livonia. The motif of Riga’s humanists is seen both as one of the main ideological driving forces of the novel and as a marginal reflection in Magnus’s life story. Acknowledged historical sources have been used in the creation of the novel: Baltazar Rusov’s “Livonian Chronicle”; Nikolai Karamzin’s “History of the Russian State”; Alexander Janov’s “Russia: 1462–1584. The Beginning of the Tragedy. Notes of the Nature and Formation of Russian Statehood” etc. In connection with the concept of Riga humanists, another fictitious document created by the writer Dobrovensky himself is especially important, namely, the diary of Johann Birke – Magnus’s interpreter, a person with a double identity, “half-Latvian”, “half-German”. It is a message of an alternative to the well-known historical documents, which allows to turn the Livonian historical narrative in the direction of “letocentrism” and raises the issue of the ethnic identity of Riga’s humanists. Along with the deconstruction of the historically documented image of Livonian King Magnus, the thematic structure of the novel is dominated by identity aspects related to the Livonian historical narrative. Dobrovensky, with his novel, raises an important question – what does the medieval Livonia, Europe’s common intellectual heritage, mean for contemporary Latvia and the human society at large? Dobrovensky’s work is also a significant challenge in strengthening emotional ties with Livonia (which were weakened in the early stages of national historiography due to conflicts over the founding of nation-states).