Andrei Rublev is considered to be one of the greatest Russian painters of Orthodox icons and frescoes, so much so that in 1551 a council of the Russian Orthodox Church established that his art was to be held as a model for ecclesiastical painting.
We have very little information about Andrei Rublev - even when and where he was born remains a mystery. All that we know for sure is that he was a monk at the Trinity Monastery of St. Sergius, 70 kilometers from Moscow, where he lived for many years between the late 1300s and the early 1400s. He then moved to Moscow, to the Andronikov Monastery of the Savior, where he died on January 29, 1430.
Fun fact: Because of the deeply spiritual nature of his works, Rublev was canonized in 1988 as a saint of the Orthodox Church.