Nikola Radonja

[3] Radonja had a title of caesar (Serbian: ћесар)[4] and controlled an estate in Serres region where he and his wife Jelena lived with their two daughters.

[5] When his wife and daughters died at very young ages, Radonja resigned his feudal position and after Autumn 1364[6][7] took monastic vows and name Gerasim[8] while his father Branko Mladenović was still alive.

[12][13] In period 1379—89 Radonja was a priest in the Hilandar Monastery and was again mentioned as Gerasim, a brother of Vuk Branković, in the 1389 document written by Prince Lazar.

[12] Nikola Radonja, as monk Gerasim, was one of the people who was represented in the Serbian historical drama/war film Battle of Kosovo set in 1389 , in interpretation of the actor Tanasije Uzunović.

[17] According to some speculations, Radonja was author of the Gerasim's Chronicle (Serbian: Герасимов летопис), allegedly disappeared at the beginning of the 20th century,[18] which supposedly explains that Miloš killed sultan Murad with a spear during the Battle of Kosovo in 1389.