Medieval Serbian princes

Strojimir (; ) was the co-ruler of the Serbian Principality alongside his two brothers Mutimir and Gojnik, from ca 851 to his and Gojnik's deposition in the 880s after an unsuccessful coup against the eldest Prince Mutimir (r. 851–891).

Klonimir (; ; ) was a Serbian prince of the Vlastimirović dynasty, and pretender to the throne of the Serbian Principality. His father and uncle, co-princes Strojimir and Gojnik, had been exiled to Bulgaria with their families after their eldest brother Mutimir had ousted them and taken the Serbian throne. Klonimir married a Bulgarian noblewoman chosen by Khan Boris I himself. She later gave birth to a son named Časlav. The descendants of the three Vlastimirović branches continued the feud over the Serbian throne which spanned over the century, and Klonimir returned to Serbia in ca. 896 and at