Sergius of Radonezh

Timeline

1. c. 1337–1354Radonezh · Moscow OblastAfter his parents' death he and his brother built a small chapel and cell on Makovets Hill; later he took tonsure with the name Sergius, lived in solitude for several years, attracted growing followers, was elected abbot and around 1354 became the first abbot of the Trinity Monastery, establishing the monastic tradition of shared labor and prayer.
2. 1354–1380Grand Duchy of Moscow · RussiaAt the request of Patriarch Philotheus of Constantinople he promoted the communal monastic rule throughout Russian lands; his disciples and influence spread across monasteries in many parts of Rus'. Sergius mediated conflicts among Moscow princes through humility and prestige, and in 1380 blessed Dmitry Donskoy's campaign against the Mongol army, becoming an important religious symbol in Russian national memory.
3. 1380–1392Trinity Monastery · Sergiyev PosadIn his later years he handed the abbot's office to his disciple Nikon but remained at the monastery. In 1389 he attended the deathbed rites of Dmitry Donskoy. He passed away at the Trinity Monastery on September 25, 1392, was buried in the monastery church, his incorrupt relics were discovered in 1422, and he was later formally canonized, becoming one of Russia's most venerated saints.