From 1377 , when Tvrtko I had himself crowned King of Bosnia , Usora was part of the Bosnian realm .
From 1377 , when Tvrtko I had himself crowned King of Bosnia , Usora included in the titles of Bosnian monarchs .
From 1377 , when Tvrtko I had himself crowned King of Bosnia , Usora was part of the Bosnian realm and included in the titles of Bosnian monarchs .