Siege of Trsat - Aftermath

Aftermath

In 800, Eric's successor Cadolah of Friuli invaded the Dalmatian Croatia by the order of Charlemagne, but without considerable military success. Still, Tarsatica was burned down. Tarsatica's surviving inhabitants moved to a more protected hill, where they established a new settlement called Trsat. Višeslav continued to rule over the Dalmatian Croatia and warred against the Franks, avoiding defeat upon his death in 802. He was succeeded by his son Borna, who later become a Frankish ally.

On Christmas Day in 800, Pope Leo III crowned Charlemagne as Imperator Romanorum (Holy Roman Emperor) in Saint Peter's Basilica. This was a direct challenge to Byzantium's claim to be the one - the Roman - empire. Nicephorus I of the Byzantine Empire and Charlemagne of the Holy Roman Empire settled their imperial boundaries in 803. Dalmatian Croatia peacefully accepted a limited Frankish overlordship. The peace of Aache in 812 confirmed Dalmatia, except for the Byzantine cities and islands, as under Frankish domain.

Ljudevit Posavski, Croatian Duke of Pannonian Croatia, led a resistance to Frankish domination. Ljudevit also had to fight against Dalmatian Croatia, as their prince Borna was a Frankish ally. After unsuccessful resistance by Ljudevit and Pannonian Croats, the Franks again controlled Istria, Dalmatia, and Pannonia. Nevertheless, Dalmatian Croatia remained a semi-independent duchy between the two Empires, as they had a right to elect their own prince.