And yet we have several distinguished historians such as Franjo Racki Nada Klaic Ivan Bojnicic and others who disagree It is simply not true there is no mention of it until 1091 From what I can see Margetic does not talk about the title he talks about the sovereign entity which is obvious since from 1091 Croatia was in deep anarchy caused by the succession crisis and the subsequent claim by the Hungarian Arpad dynasty And I actually read what Margetic says and he clearly states Stjepan was in fact recognized by the Pope and styled himself King of Croatia and Dalmatia Following the end of succession crisis and the victory of Arpad s Coloman continues in same fashion and styles himself rex Croatie atque Dalmatie You seem to have confused the name of the article with the infobox use of official titles names Those are two different things The only proper name for use in infobox is Kingdom of Croatia and Dalmatia Regno Croatiae et Dalmatiae Article title was never in question here which is Croatia in the union with Hungary