Venerable Andrei Rublev, monk and iconographer of the Holy Trinity Lavra.
St. Andrei Rublev was a monk of the Holy Trinity Monastery of St. Sergius near Moscow in the late fourteenth and early fifteenth centuries. He is the most renowned of Russian iconographers, and his icon of the Holy Trinity is honored throughout the Orthodox world.
He reposed in peace at the Andronikov Monastery and was glorified as a saint by the Russian Church.
Feast day
On the New Calendar, Andrei Rublev the Iconographer is commemorated on July 4. Churches on the Old (Julian) Calendar keep the feast on July 17 of the civil calendar.
Also commemorated on July 4

Michael Choniates of Athens
Hierarch, Μιχαήλ Χωνιάτης
St. Michael Choniates, Metropolitan of Athens, scholar and shepherd of the city.
Kyprilla, Aroa and Lucia
Holy Woman, Κυπρίλλα, Αρόα και Λουκία
Holy Women Martyrs Kyprilla, Aroa and Lucia of Cyrene.
Martha, Mother of Symeon the Stylite
Holy Woman, Μάρθα
Venerable Martha of Antioch, mother of St. Symeon Stylites the Younger.