Life and Asceticism
Saint Demetrius was born into a peasant family in Basarabov and from childhood pursued virtue through fasting and prayer. Tradition relates that while herding cattle he accidentally crushed some birds; his remorse was so intense that he vowed to go barefoot for three winters and summers as penance.
He later joined a monastery, where he learned obedience, and then withdrew to a cave near the River Lom to live in solitary prayer as an ascetic in the wilderness near Ruschuk.