father predecessor successor house mother death_date title birth_date spouse issue article_title name reign
vukac hranić kosača sandalj hranić vladislav hercegović kosača katarina 1466 grand duke of bosnia 1404 jelena balšić barbara cecilie katarina hersekzade ahmed pasha , queen of bosnia vladislav hercegović vlatko hercegović stjepan vukčić kosača
 stjepan vukčić kosača 1435 -- 1466
stjepan vukčić kosača

stjepan vukčić kosača -lrb- ; 1404 -- 1466 -rrb- was the most powerful and for the most part unruly vassal in the kingdom of bosnia .
a member of the kosača noble family , he became grand duke of bosnia upon the death of his uncle sandalj .
he refused to recognize the accession of king tomaš , proclaiming himself a semi-independent `` herzog '' , recognizing the suzerainty first of the ottoman empire , then aragon and again the ottoman empire .
peace was briefly restored by the marriage of king tomaš and stjepan 's daughter katarina , but it did not last long .
it was stjepan 's german title of `` herzog '' that gave rise to the name of ottoman sanjak established after 1482 when the kosača family domain fell under ottoman rule .
the name remained since then and it 's used for modern region of herzegovina -lrb- sanjak of herzegovina was part of the bosnia eyalet , while modern herzegovina is part of modern bosnia and herzegovina -rrb- , and town of herceg novi in present day 's montenegro as well .
