Acta Historica Universitatis Klaipedensis

This article seeks to analyse the presence and activities of Lithuanian grand ducal power along the River Nemunas in the period 1283 to 1410. The war between the Teutonic Order and the Lithuanians is viewed from the point of view of challenge-and-response theory. A detailed analysis of narrative sources has allowed us to distinguish two periods in which Lithuanian grand ducal power actively promoted the introduction of innovations in the Lithuanian art of war. The first period encompasses the last decade of the 13th century and the first decade of the 14th century. In this period, not only was a line of Lithuanian castles put in place along the rivers Nemunas and Jūra, but also what we call the Lithuanian military riverine fleet was created. The period was also likely to have been a time when Lithuanian forces adopted the crossbow. The second period involves the last two decades of the 14th and the early 15th century. In this period, a more active defence of fords across the rivers Nemunas and Neris was undertaken from time to time by Lithuanian troops, by putting up wooden fortifications and employing artillery. The synergy of fortification and artillery was a recipe for Lithuanian troops to counter some of the advantages enjoyed by their Teutonic adversaries on water and on land.

The article examines the political relations between the Grand Duchy of Lithuania, especially Žemaitija as a constituent part, and Žemgala (Semigallia), from the beginning of the 1279 Žemgalian uprising against the Teutonic Order until the rule of Grand Duke Gediminas of Lithuania. The author tries to explain why Gediminas used the title of Duke of Žemgala in his letters of 1323, although in other cases, the title of the Lithuanian rulers does not include the name of Žemgala, and neither do other sources describing the territorial structure of the grand duchy mention Žemgala as part of it. Some historians have already argued that Žemgala was joined to the Grand Duchy of Lithuania in 1279. The article re-examines this argument, and tries to validate it. The cooperation of Lithuania (especially Žemaitija) with the Žemgalians during the war of 1279–1290 shows that the integration of Žemgala into the Lithuanian state was in fact its integration into Žemaitija during the war. The author concludes that this integration was not denied by the time Gediminas took power, despite the fact that the Teutonic Order had already initiated a new phase in the invasion of Žemgala. Gediminas used the title of Duke of Žemgala because he actually controlled most of Žemgala. A substantial part of it remained permanently within the Grand Duchy of Lithuania.

The secularisation of the domains of the Teutonic Order in Prussia led to the establishment of the first Lutheran territorial church in the world. This fact is almost forgotten today, and this is evident even in specialised literature on the Reformation. The article outlines the introduction of the Reformation in Prussia, considering it as an example of its smooth and successful entrenchment. In order to show this, the late stage of the rule of the Teutonic Order is defined, showing that fundamental reform was triggered by a multi-layered crisis characteristic of the Order’s domains in Prussia. The article shows that, in coordination with Martin Luther and Philipp Melanchton, and assisted by his bishops, after becoming the first Duke of Prussia in 1525, Albert, the Grand Master of the Teutonic Order, implemented reforms in his domains that resembled the main problems raised by the Reformation in an almost exemplary way. But at the same time, it shows that the introduction of the Reformation in Prussia was not a unidirectional process, for Duke Albert supported Andreas Osiander’s ideas for some time, before he gradually entered the ranks of the confessors of Augsburg.

The article explores the changes in the gathering, processing and use of amber on the eastern shores of the Baltic Sea at the end of the Viking Age and in the 12th to 16th century. In the pagan sacral space, works in amber reflected mythological elements, and later they were transformed and adapted to Christian practice, at the same time as maintaining the commercial value of amber as a material. Archaeological material from the above-mentioned period illustrates the gradual diffusion of Christian elements in the pagan territories. Their expression is visible in new forms of amber works.

The paper presents the general conditions in which the pastoral work of mendicant orders was conducted in the domains of the Teutonic Order and particular bishoprics in Prussia and Livonia, at the same time indicating similarities and differences in the situations in which friars had to work in these areas. The research focuses exclusively on pastoral work conducted among the urban population. The network of mendicant friaries in Prussia and Livonia was a reflection of the demographic potential and the degree of urbanisation of both parts of the domains of the Teutonic Order. The scale of effectiveness of the friars is authenticated by numerous references to prayer agreements concluded with members of religious orders and guilds of craftsmen, burials in friary churches (tombstones), and bequests of townspeople. The degree of success of mendicant orders and the support of the townspeople is confirmed in the partially preserved great hall-type churches erected by mendicants in the main towns (Gdańsk, Toruń, Tallinn, Riga).