THE TURKISH CONQUEST 229 in Bulgaria, and King Ladislas was killed. The young Ladislas Posthumus was then elected King of Hungary. One of the Sultan’s first acts after this fight was to raise the Ragusan tribute as a punishment for sending galleys to join the Christian fleet.1 George, Despot of Servia, with characteristic treachery, had arrested and imprisoned Hunyadi after the Hungarian defeat. The Ragusan envoy, Damiano Giorgi, who had come to Belgrad to return the Despot’s treasure, made every effort to obtain Hun-yadi’s release, but as George would not hear reason, he induced the Serbs to liberate him without the Despot’s consent. Giorgi and his family were afterwards taken into the Hungarian service by the new king, Matthew Corvinus, as a reward, and given high emiaiuments. But they never ceased to work in the interests of their native city by means of their influence at Court. The efforts of Ragusan citizens in foreign countries were among the chief causes by which the Republic attained to and maintained its international position. In 1447 war between Hungary and the Turks broke out anew, and Hunyadi led an expedition across the Danube, but the following year he was defeated on the ill-omened field of Kossovo. On this, as on other occasions, Ragusa sent a number of boats to Albania to pick up the fugitives who had escaped across country from the fury of the invaders, and sent them back to Hungary or gave them asylum in the town. Peace was concluded, but fighting continued in Albania, and we now find the name of Skanderbeg, the great Albanian hero, mentioned for the first time in the Ragusan annals. 1 Hammer-Purgstall, 453.