Abstract
The thesis discusses the life and career of the late-medieval Czech diplomat Prokop of Rabštejn (about 1410 - probably 1470), an older brother of the renowned humanist Jan of Rabštejn. The main part of the thesis follows Prokop's activities during the Poděbrad era in which he successively served under Holy Roman Emperor Frederick III, King of Bohemia and Hungary Ladislaus the Posthumous and the elected Bohemian King George of Poděbrady, but also pays attention to Prokop's background and his work in the office of the German rulers Sigismund of Luxemburg and Albert II Habsburg.
The activities of Prokop of Rabštejn are discussed in the wider context of Central European history in the Late Middle Ages and with regard to specific cultural aspects of that time (reception of humanism in the Bohemian environment of the Poděbrad era). The thesis draws from authentic period documents both of a diplomatic (in particular Prokop's correspondence) and narrative character, and critically examines older literature focusing on or related to the topic.