Ladasclavus, transliterated as Vladislav[3] or Ladislas[4] (fl.
In sources he is mentioned as the Duke of Dalmatia and Liburnia (dux Dalmatiae atque Liburnae),[1] having succeeded his uncle Borna, a Frankish vassal.
Borna had died between January and October 821,[1] during a war against Frankish rebel Ljudevit, Duke of Pannonian Croatia.
[4] Borna's nephew (by his sister)[2] Vladislav succeeded him, by the people's will and emperor's approval.
[4] Vladislav ruled from Nin as a loyal vassal of the Frankish Emperor Lothair I.