The Phenomenon of Clientage and the Organisation of Diplomatic Activities in the Grand Duchy of Lithuania of the Second Half of the Sixteenth Century

Researchers of the sixteenth-century European diplomacy discuss diplomatic networks and daily life activities of ambassadors conditioned by the development of residential diplomacy. At the same time, historians of the Polish-Lithuanian Commonwealth study diplomatic phenomena of a different kind since a resident mission system was not developed in Poland-Lithuania. The practice of temporary legations persisted and led to the development of distinctive features of envoys’ diplomatic activities during their missions. It also is possible to see different circumstances when looking into the question of the professionalization of Polish-Lithuanian diplomats and their personal qualities relevant to their diplomatic missions. The study of this problem reveals that, in the case of the Grand Duchy of Lithuania, a relatively strong patron-client relationship occurred as well as close links between the patronage system and organisation of diplomatic activities. Research into the practice of assigning envoys to diplomatic missions makes it possible to establish that almost all lower-rank envoys between the midand last decade of the sixteenth century were clients of the Radziwill family, dominating the political life of the Grand Duchy of Lithuania at that time. One of the main tasks of the Radziwill clients nominated as diplomatic envoys was to supply information to their patrons. At the same time, we can also see an attempt to control diplomatic communications with foreign countries. This group of Radziwill clients, who performed various diplomatic missions, is the subject of the analysis presented in this article. I try to determine here the reasons for appointing particular clients as foreign envoys and see how their diplomatic functions influenced their future careers.