Rus'". On the other hand, the southwestern territories of former Kievan Rus' would undergo Polonisation and experience the 1596 Union of Brest, leading to the creation of the Ruthenian Uniate Church (Belarusian: Руская Уніяцкая Царква; Ukrainian: Руська Унійна Церква; ; ). The primate of this church was titled "Metropolitan of Kyiv, Galicia and all Ruthenia". The Annexation of the Metropolitanate of Kyiv by the Moscow Patriarchate happened in 1685–1722. When the Ukrainian Autocephalous Orthodox Church proclaimed itself in 1917, its primates styled themselves "Metropolitan of Kyiv and All Ukraine", thus replacing "Rus'" with "Ukraine", until 1936. From 1991 to 2000, two further patriarchs of the UAOC called themselves "Patriarch of Kyiv and all Rus-Ukraine", but then "Rus" was definitively dropped from the name. After the Unification Council of 2018 which established the Orthodox Church of Ukraine (OCU), the title of Metropolitan of Kyiv and All Ukraine was first held by Epiphanius I of Ukraine. His rival Filaret (Denysenko) of the Ukrainian Orthodox Church – Kyiv Patriarchate (UOC-KP) continues claiming the title "Patriarch of Kyiv and All Rus'-Ukraine". Onufriy (Berezovsky) of the Ukrainian Orthodox Church (Moscow Patriarchate) (UOC-MP) also claims the title of "Metropolitan of Kyiv and All Ukraine", and in 2022 the UOC formally cut ties with the Russian Orthodox Church. See also Name of Ukraine References Citations Sources (first published 2012 by Рукописные памятники Древней Руси [Manuscript monuments of ancient Rus'], Moscow). E. Nakonechniy. The Stolen Name: How the Ruthenians became Ukrainians. (Lviv, 1998) P. Pekarskiy. Science and Literature in Russia in the Age of Peter the Great. (St Petersburg, 1862) S. M Solovyov. History of Russia since the Ancient Times. (Moscow, 1993) Hakon Stang, The Naming of Russia (Oslo: Meddelelser, 1996). Y. M. Suzumov. Etymology of Rus (in Appendix to S. Fomin's "Russia before the Second Coming", available on-line in Russian.) Zerkalo Nedeli (Mirror Weekly): "How Rusyns Became Ukrainians", Zerkalo Nedeli (Mirror Weekly), July 2005. Available online in Russian and in Ukrainian. "Such a Deceptive Triunity", Zerkalo Nedeli (Mirror Weekly), 2–8 May 1998. Available online in Russian and in Ukrainian. "We Are More 'Russian' than Them: a History of Myths and Sensations", Zerkalo Nedeli (Mirror Weekly), 27 January – 2 February 2001. Available online in Russian and in Ukrainian. Country name etymology Name Viking Age populated places Exonyms Ethnonyms Saga locations History of Russia