Venerable Sergius of Radonezh, abbot and wonderworker, father of Russian monasticism.
St. Sergius was born near Rostov in the early fourteenth century and, as a young man, withdrew with his brother into the forest of Radonezh, where he built a church of the Holy Trinity. The brotherhood that gathered around him became the Trinity Lavra, the spiritual heart of Russia, and his disciples founded monasteries across the land.
He blessed Prince Dmitry Donskoy before the battle of Kulikovo and reposed in 1392. His repose is commemorated on September 25.
Feast day
On the New Calendar, Sergius of Radonezh is commemorated on September 25. Churches on the Old (Julian) Calendar keep the feast on October 8 of the civil calendar.
Who celebrates a name day
People with these names keep their name day on this feast:
Also commemorated on September 25

Euphrosyne of Alexandria (2nd)
Holy Woman, Ευφροσύνη
Venerable Euphrosyne of Alexandria.
Name days: Euphrosyne, Efrosyni, Frossini
Paphnutius the Egyptian
Venerable, Παφνούτιος
Venerable Paphnutius of Egypt, father of St. Euphrosyne of Alexandria.
Name days: Paphnoutios, Pafnoutios, Paphnutius
Paphnutius the Hieromartyr and the 546 with him
Hierarch, Παφνούτιος ο Ιεροσολυμίτης
Hieromartyr Paphnutius of Egypt and the 546 martyrs who suffered with him.
Paul, Tatta and their Children
Martyr, Παύλος, Ταττή και τα τέκνα
Holy Martyrs Paul and Tatta of Damascus and their sons Sabinian, Maximos, Rufus and Eugene.
Theophilos of Ephesus
Hierarch, Θεόφιλος Εφέσου
St. Theophilos, Archbishop of Ephesus, confessor of the holy icons.