The history starts with župan (Duke) Vukoslav, who held Trebinje, Gacko and Rudine in the western lands of King Stefan Dečanski, but loses them in 1328–1331.

[1] He was given an oblast that connected Pomoravlje (Ćuprija and Paraćin) with the lower part of the Timok Valley over Čestobrodice, by Emperor Dušan the Mighty (r.

Crep was a vassal to Prince Lazar of Serbia, and held the frontier region around Petrus Fortress, in Paraćin.

[2][3] Crep founded Sisojevac monastery, he also contributed to the Great Lavra (Athos).

The family was involved in a brief conflict[4] about a church and its villages (Lešje[2]) that Vukoslav had given to Chilandar in 1360.