 After 1375 Grigorije of Gornjak, Romil of Ravanica, Roman and several members of their hesychiastic brotherhood arrived in Moravian Serbia and put themselves under the protection of Prince Lazar.They participated in establishing a strong hesyastic colony consisting of Serbian, Bulgarian and Greek monks who came from Mount Sinai.According to the legends, Prince Lazar was hunting near river Mlava when he noticed monk Grigorije on the other side of the river.