Events from the 9th century in, or regarding, Historic Serbia or Serbs.
Monarchs
The following, of the Vlastimirović dynasty, ruled Serbia: Prince Višeslav (fl. 768–814) Prince Radoslav (ca. 814–822) Prince Prosigoj (ca. 822–836) Prince Vlastimir (ca. 836–850) Prince Mutimir (ca. 850–891) Prince Strojimir (co-ruler ca. 850–?) Prince Gojnik (co-ruler ca. 850–?) Prince Pribislav (891–892) Prince Petar (892–917)
Events
805
Bulgar Khan Krum conquers Braničevo (Braničevci), the Timok Valley (Timočani) and the Obotrites, banishing the tribal chiefs and replacing them with administrators appointed by the central government. around 814 Višeslav is succeeded by his son Radoslav. 818 Braničevci and Timočani, together with other tribes of the frontier, revolted and seceded from Omurtag's Bulgaria because of an administrative reform that deprived them of much of their local authority. They left the association (societas) of the Bulgarian Empire and sought, together with many other Slavic tribes, protection from Holy Roman Emperor Louis the Pious, meeting him at his court at Herstal. 819–822 Ljudevit Posavski leads an uprising against the Franks (819). According to the Royal Frankish Annals, (written 822), Ljudevit went from his seat in Sisak to the Serbs somewhere in western Balkans – the Serbs are mentioned as reportedly helding the great/large part of Dalmatia ("Sorabos, quae natio magnam Dalmatiae partem obtinere dicitur"). around 822 Radoslav is succeeded by his son Prosigoj. 822 Braničevci and Timočani and other frontier tribes come under Frankish rule. In 823 The Narentines were at the time (823) subordinate to the Serbian Principality. 824–827 Timok and Branicevo would be of dispute between the Franks and Bulgars, the Khan sent embassies in 824 and 826 seeking to settle the border dispute, but was neglected.The early medieval Balkans The Bulgarian Empire subsequently annex the region again. 827 Omurtag invades Frankish Croatia using boats sailing from the Danube up the Drave, spreading destruction. The Slavs and other tribes on its banks were cowed into submission, and agreed to accept Bulgar governors. by 836 It is thought that the rapid extension of Bulgars over Slavs to the south prompted the Serbs to unite into a state under Vlastimir. Vlastimir united several Serbian tribes, and Emperor Theophilos (r. 829–842) probably granted the Serbs independence, thus the Serbs acknowledged nominal overlordship of the Emperor. ca 839 In c. 839 Doge of Venice Pietro Tradonico headed with a large fleet towards the Narentines. They subsequently made peace and renewed a treaty, that would stop the piracy against the Republic of Venice. They however, shortly thereafter, plundered the Venetian borders under the leadership of Uneslav and Diodor. Ljudislav, the Narentine ruler that defeated Doge Pietro in 840, was possibly a co-ruler or successor of Drosaico. 839–842 Khan Presian I of Bulgaria (r. 836–852) invades Serbian territory between 839–842 (see Bulgarian–Serbian Wars). The invasion led to a 3-year war, Vlastimir was victorious; Khan Presian made no territorial gain, was heavily defeated and lost many of his men as the Serbs had a tactical advantage in the hills, Presian was driven out by the army of Vlastimir. The war ended with the death of Theophilos in 842, which released Vlastimir from his obligations to the Byzantine Empire. after 842, before 846 Vlastimir went on to expand to the west, taking southeast Bosnia and northeast Herzegovina (Hum). In the meantime; Braničevo, Morava, the Timok Valley, Vardar and Podrimlje were occupied by the Bulgars. after 847 Soon after 846, with the end of the Thirty Years’ truce, Malamir (or Presian) invaded the regions of the Struma and the Nestos, Empress-Regent Theodora answered by attacking Thracian Bulgaria. A brief peace was concluded, then Malamir proceeded to invade Macedonia. The Bulgarians soon annexed Ohrid, Bitola and Devol. 847/848 Vlastimir marries his daughter to Krajina Belojević (son of Beloje, a lord in Trebinje), in 847/848. Krajina was given the title of Župan, to rule the province of Travunia with Konavle (centered on modern Trebinje), in the name of his father-in-law Vlastimir.(Božidar Ferjančić), „Vizantijski izvori za istoriju naroda Jugoslavije II“ (fototipsko izdanje originala iz 1959), Beograd, 2007. (str. 62) The Belojević noble family was entitled the rule of Travunia. ca 850 Vlastimir dies. He is succeeded by his sons: Mutimir, Strojimir and Gojnik. Mutimir holds the supreme power. 853/854 The Bulgar Army led by Vladimir, the son of Boris I of Bulgaria, invaded Serbia in an attempt for vengeance for the previous defeat of Presian 839–842 against Vlastimir.