Vlastimir
Vlastimir was a Serbian prince who ruled during the mid-9th century (c. 830 – 850). He is considered the founder of the Vlastimirović dynasty, the first Serbian ruling dynasty known by name.
Vlastimir succeeded his father Prosigoj, and during his reign, he successfully defended his territory against the expansionist ambitions of the Bulgarian Khanate under Presian I. The war between the Serbs and Bulgarians lasted three years, ending with a Serbian victory. Bulgarian sources do not mention this war, leading some historians to believe it may have been a minor conflict or that Serbian sources may have exaggerated its significance.
Vlastimir consolidated his power and expanded his influence over neighboring Slavic tribes. He is believed to have ruled over a territory encompassing parts of modern-day Serbia, Montenegro, Bosnia and Herzegovina, and Kosovo. He promoted Christianity within his realm.
After his death, Vlastimir's kingdom was divided among his three sons: Mutimir, Strojimir, and Gojnik. This division led to internal conflicts and weakened the Serbian state, eventually paving the way for Bulgarian intervention and temporary subjugation. Vlastimir remains an important figure in Serbian history, remembered as a capable ruler who laid the foundation for a more powerful and independent Serbian state.