Following a civil war,
Algirdas was acknowledged as the new Grand Duke of Lithuania. Having increased the territorial extent of the state in the south, he was in a stronger position to advocate for the restoration of metropolis. In 1360, he deposed Theodore who was the last ethnic Rus' prince of Kiev. In his place, he placed his own son,
Vladimir, on the throne. After the death of Theognostus in 1353, Algirdas did not at first attempt to revive the Metropolitanate of Lithuania. Instead, he promoted his own candidate - Teodoryt - to the see of Kiev and All Rus'. When Teodoryt failed to gain support in the Ecumenical Patriarchate, he turned to the schismatic
Bulgarian Orthodox Church and received ordination there. Such actions may indicate that Algirdas envisioned an
autocephalous church of his own. In any case, Theognostus' favoured candidate —
Alexius — was consecrated as Metropolitan of Kiev and All Rus' in 1354. Algirdas now changed his support from Teodoryt to Roman. Roman was a monk from Tver and a relative of Algirdas' wife
Uliana. Algirdas agreed to cease his support for Teodoryt on the grounds that his ordination was uncanonical, on condition that Roman was also appointed as Metropolitan of All Rus'. Algirdas even promised to convert to Orthodoxy in exchange for the ordination of Roman. In Constantinople, Patriarch
Callistus I was deposed and was succeeded by Patriarch
Philotheus I of Constantinople (November 1353 – 1354). In 1355, after diplomatic struggles, a restored Patriarch
Callistus I of Constantinople, in agreement with Philotheus, united the
Metropolis of Halych with the Metropolis of Lithuania under the leadership of Metropolitan Roman. Callistus also confirmed that
Alexius remained in possession of the "Metropolis of Kiev and all Rus'". All eparchies of the Halych metropolis were transferred to the jurisdiction of a united metropolis, which was also known as the "Metropolis of Lithuania-Volhynia". There were now two metropolitans in Rus' lands. While Roman won over some bishops, he failed to secure the support of the Bishop of Tver. The ecclesiastical authorities of Constantinople did not take any measures to delineate the powers of the two metropolitans; neither did they assign any particular diocese of the old Rus' metropolis to the new metropolis of Lithuania-Volhynia. As a result, Roman began to claim that he ruled not only the dioceses of Lithuania-Volhynia, but also those of the entire Rus' metropolis. The ensuing struggle between the two metropolitans continued until Roman's death in 1362. Both Metropolitans travelled to Constantinople to make their appeals in person. In 1356, their cases were heard by a Patriarchal Synod. The Holy Synod confirmed that Alexis was the Metropolitan of Kiev while Roman was also confirmed in his see at Novogorodek. In 1361, the two sees were formally divided. Shortly afterwards, in the winter of 1361/62, Roman died. From 1362 to 1371, the vacant see of Lithuania–Halych was administered by Alexius. By that point, the Lithuanian metropolis was effectively dissolved. ==Disestablishment of the metropolis==