What is "celnik"

čelnik was a court title of the Kingdom of Serbia, Serbian Empire and Serbian Despotate. In its early form, the holder was entrusted with the security of property belonging to the Church from the aristocrats, so the holder appeared in the role of a judge or executor of the ruler's decisions, in disputes between the church and the nobility. At the beginning of the 15th century, during the Serbian Despotate, the title of veliki čelnik was the equivalent of count palatine and was the highest court title, with the title-holders holding great provinces, property, and honours.