(modern Croatia). Garipzanov, Geary and Urbańczyk (2008) call him "Duke of Dalmatia and Liburnia". Identification with other rulers Marquart, in Osteuropäische u. ostasiatische Streifzöge (1903), identified De Administrando Imperio's Porinos and Porga with Borna. Krumbacher (1906) supported that Porinos and Borna were the same, but not Porga. However, on the mere basis of the chronology of arrival and baptism in the 7th century, as well the non-Slavic origin of personal names of early Croatian rulers in the 7th century, Porga could not be Borna or Branimir (r. 879–892), with whom some scholars tried to identify him with. Titles In the Royal Frankish Annals Borna is named "Duke of the Guduscani" () in 818. In 819 he is the "Duke of Dalmatia" (), while in 821 he is the "Duke of Dalmatia and Liburnia" (). The gradual ascent of his title should be due to his growing importance during the Frankish conflict with Ljudevit. References Sources Dukes of Croatia 9th-century Croatian people 9th-century rulers in Europe Christian monarchs People from the Carolingian Empire History of Dalmatia History of Lika Year of birth unknown 821 deaths 9th-century Slavs Slavic warriors