King of the Slavs () was a title denoting some Slavic rulers, as well as Germanic rulers that conquered Slavs, in the Middle Ages in European sources, such as Papal correspondence.
Papal use is bolded.
Samo, established a tribal polity of various Slavic tribes (623–658); according to the Chronicle of Fredegar and was called King of the Slavs according to later reworkings of this account Drogoviz, ruler of the Veleti (789); in Annales Mettenses priores in 805 Trpimir I, ruler of Duchy of Croatia (845–864); erroneously by Gottschalk in the 840s Svatopluk I of Moravia, ruler of Great Moravia (870–894); by Pope Stephen V in 885 Michael, ruler of Zachlumia (913–926); erroneously in the Annales Barenses Mihailo Vojislavljević, ruler of Duklja (1050–1081); by Pope Gregory VII in 1077 Constantine Bodin (Bodin Vojislavljević), ruler of Duklja (1081–1101); by the chronicle of Orderic Vitalis, relating to events of 1096 Canute Lavard, Danish prince (1120–1131); by Abbott Wilhelm after 1129 Canute VI, King of Denmark; by himself in 1185, after a conquest of Pomerania Stefan Dragutin, ruler of Kingdom of Serbia (1276–1282) and Syrmia (Realm of Stefan Dragutin; 1282–1316); by Pope Nicholas IV in 1288
See also King of the Wends
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