campaign under the command of Phynta de Mende (1324). In 1342 and 1345, the Hungarians were victorious in a battle against Tatar-Mongols; the conflict was resolved by the death of Jani Beg, in 1357. The Polish chronicler Jan Długosz mentioned Moldavians (under the name Wallachians) as having joined a military expedition in 1342, under King Władysław I, against the Margraviate of Brandenburg. In 1353, Dragoș, mentioned as a Vlach Knyaz in Maramureș, was sent by Louis I to establish a line of defense against the Golden Horde forces of Mongols on the Siret River. This expedition resulted in a polity vassal to Hungary, in the Baia (Târgul Moldovei or Moldvabánya) region. Bogdan of Cuhea, another Vlach voivode from Maramureș who had fallen out with the Hungarian king, crossed the Carpathians in 1359, took control of Moldavia, and succeeded in removing Moldavia from Hungarian control. His realm extended north to the Cheremosh River, while the southern part of Moldavia was still occupied by the Tatar Mongols. After first residing in Baia, Bogdan moved Moldavia's seat to Siret (it was to remain there until Petru II Mușat moved it to Suceava; it was finally moved to Iași under Alexandru Lăpușneanu - in 1565). The area around Suceava, roughly correspondent to future Bukovina, would later constitute one of the two administrative divisions of the new realm, under the name Țara de Sus (the "Upper Land"), whereas the rest, on both sides of the Prut river, formed Țara de Jos (the "Lower Land"). Disfavored by the brief union of Angevin Poland and Hungary (the latter was still the country's overlord), Bogdan's successor Lațcu accepted conversion to Roman Catholicism around 1370. Despite the founding of the Roman Catholic Diocese of Siret, this move did not have any lasting consequences. Despite remaining officially Eastern Orthodox and culturally connected with the Byzantine Empire after 1382, princes of the House of Bogdan-Mușat entered a conflict with the Constantinople Patriarchy over control of appointments to the newly founded Moldavian Metropolitan seat; Patriarch Antony IV even cast an anathema over Moldavia after Roman I expelled his appointee back to Byzantium. The crisis was finally settled in favor of the Moldavian princes under Alexander I. Nevertheless, religious policy remained complex: while conversions to faiths other than Orthodox were discouraged (and forbidden for princes), Moldavia included sizable Roman Catholic communities (Germans and Magyars), as well as non-Chalcedonic Armenians; after 1460, the country