In 1593, "Provveditore Generale" Cristoforo Valier mentions three nations constituting the Uskoks: "natives of Senj, Croatians, and Morlachs from the Turkish parts". Many of the Uskoks, who fought a guerrilla war with the Ottoman Empire were Orthodox Christians, who fled from Ottoman Turkish rule and settled in White Carniola and Zumberak.The Vlachs from Glamoc, Srb and Una area move in among Orthodox Christians and settling in 1530 under protection of King Ferdinand I. on the border of the Julian Alps (now Uskoks mountain) in Žumberak area King Ferdinand in November 6, 1538. writes a letter to Petar Keglević "te in hoc, quod capitanei et woyvode Rasciani sive Servian! atque Valachi, quos vulgo Zytschy (Cici) vocant, cum eorum subditis et adherentibus fidem devotionemque" in which he mentions "Rascians or the Serbs!" "And Vlachs!" who are commonly called the Ćići. Tihomir Đorđević points to the already known fact that the name 'Vlach' didn't only refer to genuine Vlachs or Serbs but also to cattle breeders in general. In the Venetian documents from the late 16th and 17th centuries, the name "Morlachs" (another term of Vlachs, first mentioned in the 14th century) was used for immigrants from conquered territory previously of Croatian and Bosnian kingdoms by the Ottoman Empire. They were of both Orthodox and Catholic faith, settled inland of the coastal cities of Dalmatia, and entered the military service of both Venice and Ottoman Empire. There was a population movement from the Ottoman territories into Venetian Dalmatia in this period. The Venetian government welcomed immigrants, as they protected possessions against the Ottomans. The Morlachs, former Ottoman subjects, helped Venice triple its size in Dalmatia. The bishop of Makarska described how many people migrated from the Ottoman Empire to Venetian territories. Major population movements into Venetian Dalmatia occurred during the 1670s and 1680s. In the summer of 1685, Cosmi, the Archbishop of Split, wrote that Morlach leader Stojan Janković had brought 300 families with him to Dalmatia, and also that around Trogir and Split there were 5,000 refugees from Ottoman lands, without food; this was seen as a serious threat to the defense of Dalmatia.