gyula chieftain or duke was gyula a prince a chieftain a duke he was a relative of prince and later king stephen i of hungary so i think he could be regarded as either duke or prince there are two written sources about gyula gesta hungarorum and a byzantinian chronicle i have to search more for the title of this gyula and identifying the byzantinian source jan utc was gyula chieftain of transylvania i think not if one is to call him as such quoting sources would be great since it could be regarded as propaganda jan utc