Orthodox Church established the diocese of Hum in 1219, seated at Ston, that linked the Pelješac peninsula with Hum which lasted until 1321 when Serbian Orthodox bishop had to withdraw from Ston. Serbia continued to hold parts of southernmost Dalmatia into the 14th century. In 1333 King of Serbia Stefan Dušan sold the Pelješac peninsula and the coast land between Ston and Dubrovnik to the Republic of Ragusa, while Ragusa had to pay an annual tribute and also had to guarantee freedom of worship for Orthodox believers in this territory. Among the oldest Orthodox churches in Croatia are the monasteries of Krupa, Krka and Dragović, but their dating to the 14th century remains controversial as, among other evidence and forgeries, have Romanesque and Gothic architectural characteristics uncommon for the Byzantine-Orthodox style. According to Yugoslav ethnologist Jovan Erdeljanović, members of the Orlović clan settled in Lika and Senj in 1432, later joining the Uskoks. In 1436 on the Cetina, Croats, Vlachs, and Serbs appeared at the same time living on the estate of Ivan Frankopan. Serbs are reported in Hungarian documents as living in Croatia in 1437 (three documents call the Serbs in Syrmia and Slavonia as Rascianos–Rascians) and on 22 November 1447, the Hungarian King Ladislaus V wrote a letter which mentioned "Rascians, who live in our cities of Medvedgrad, Rakovac, both Kalinik and in Koprivnica". Matthias Corvinus complained in a letter from 1462 that 200,000 peoples during the previous three years had been taken from his country by Turks, this information was used as a reference for Serb migration to Hungary. After the Ottoman conquests of Serbia and capture of Smederevo fortress in 1459 and fall of Bosnia 1463 different populations of Orthodox Christians moved into Syrmia and by 1483 perhaps 200,000 Orthodox Christians moved into central Slavonia and Syrmia. The Turkish conquest of Bosnia also pushed refugees and migrants into western Croatia. Early modern period As many former inhabitants of the Austrian-Ottoman borderland fled northwards or were captured by the Ottoman invaders, they left unpopulated areas. At the beginning of the 16th century settlements of Orthodox Christians were also established in modern-day western Croatia. In the first half of the 16th century Serbs settled Ottoman part of Slavonia while in the second part of the 16th century they moved to Austrian part of Slavonia. In 1550 they established the Lepavina Monastery. As Vlach settlements by name and signature