Mezue ahịrịokwu na-esonụ: Na 1373, mgbe mwakpo atọ na-enweghị isi nke Grand Duke nke Lithuania Algirdas megide Muscovy dị ka akụkụ nke
Lithuanian <unk> Agha Muscovite na nkewa nke Metropolitan nke Kiev na akụkụ Muscovite na Litvin (nkewa malitere na 1316 ma were ụdị egwu na mbido 1350s). Cyprian bụ onye ndị Patriarch zigara dị ka "onye ntụkwasị obi" (onye nnọchi anya) na Lithuanian na Muscovite Russias na ebumnuche nke ime ka ndị isi Litvin na Tverite kwekọrịta na de facto Muscovite Metropolitan Alexius ma gbochie oke nkewa nke Chọọchị n'ụzọ ndọrọ ndọrọ ọchịchị n'etiti Wilno na Moscow. Ikekwe, n'oge oyi nke otu afọ ahụ, Cyprian gara Kiev na nke mbụ ya tinyere obodo ndị ọzọ nke Grand Duchy nke Lithuania. Na 9 Machị 1374 ọ gara Tver na nraranye nke bishọp nke Tver Euthymius na mgbe e mesịrị ya na Metropolitan Alexius hapụrụ Pereslavl-Zalessky. Na Constantinople, Cyprian si na Grand Duchy nke Lithuania lọta na-ebu akwụkwọ ozi sitere n'aka Onye Kraịst Ọtọdọks Lithuanian-Ruthenian (Russian) na arịrịọ nye onye isi ala ka o doo ya nsọ dị ka onye isi obodo nke Lithuania.