The "Dukes of Istria" refers to the noble rulers who governed the region of Istria, located in the northern Adriatic Sea. This area has a rich history influenced by various cultures, including Roman, Venetian, and Austrian rule. The title of Duke was often associated with local governance and land ownership, reflecting the feudal system prevalent during the Middle Ages. The Dukes played a significant role in the political and economic development of Istria. They were responsible for maintaining order, collecting taxes, and overseeing trade in the region. Their legacy can still be seen today in the historical architecture and cultural heritage of Istria.