Renunciation and Monastic Life
Oleg Romanovich belonged to the line of the princes of Chernigov and Briansk. In 1274 he joined his father, Prince Roman Mikhailovich, in a war against Lithuania. Following this campaign he gave up his princely position to embrace the monastic life.
He entered the monastery of Saints Peter and Paul in Briansk, a community he had himself funded. Receiving the monastic name Basil, he lived there as a strict ascetic until his repose in 1285, and was buried in the monastery church.