Višeslav was succeeded by his son Radoslav followed by his grandson Prosigoj, and one of these two most likely ruled during the revolt of Ljudevit of the Slavs in Lower Pannonia against the Franks (819–822). According to Einhard's "Royal Frankish Annals", Ljudevit fled from his seat at Sisak to the Serbs in 822, with Einhard mentioning that for the Serbs is said to control a great part of Dalmatia" ("ad Sorabos, quae natio magnam Dalmatiae partem obtinere dicitur"), but according to John (Jr.) Fine, it was hard to find Serbs in this area since the Byzantine sources were limited to the southern coast and they make no suggestion that they settled here, but it is possible that among other tribes existed a tribe or group of small tribes of Serbs. However, the mentioning of "Dalmatia" in 822 and 833 as an old geographical term by the authors of Frankish Annals was "Pars pro toto" with a vague perception of what this geographical term actually referred to.