Saint Maximus was a Greek-born hierarch who served as Metropolitan of Kiev and All Rus' from 1283 until his death in 1305. He arrived in Rus' during the period of Mongol (Tatar) domination, succeeding the Metropolitan Cyril III, and inherited a Church whose ancient center at Kiev had been repeatedly devastated by Tatar incursions.
Finding Kiev ruined and unsafe, Maximus gradually withdrew the metropolitan residence northward, by tradition moving first to Briansk and then to Suzdal, before transferring his cathedra to Vladimir-on-Kliazma in 1299. Although he settled in the north, he retained the historic title of Metropolitan of Kiev. The move marked a significant shift in the geographic center of the Russian Church toward the northeast, anticipating its later consolidation around Moscow under his successors.
As metropolitan he was active in the governance of the Church and in the affairs of the Rus' principalities. The sources relate that he deposed the bishop of Vladimir in 1295 and installed Simon in his place, and that in 1300 he appointed Saint Theoctistus as Bishop of Novgorod. He also mediated among the contending princes during the rivalry between Moscow and Tver. In 1301 he travelled to Constantinople to take part in a patriarchal council, where he set forth questions concerning the needs of the Russian Church.
Saint Maximus reposed on December 6, 1305, and was buried in the Dormition (Uspensky) Cathedral in Vladimir. He was succeeded as metropolitan by Saint Peter of Moscow. He is commemorated on December 6.