Prince Lazar was the ruler of Moravian Serbia and the most powerful among the Serbian regional lords of the time, while Vuk Branković ruled District of Branković located in Kosovo and other areas, recognizing Lazar as his overlord.
Prins Lazar var regent i Moravisk Serbien, og den mest magtfulde blandt tidens lokale serbiske fyrster, mens Vuk Brankovic regerede Brankovic-området der dækkede delle af Kosovo og andre områder, der anerkendte Lazar som sin overherre.