Özet:

The conquest of Kastamonu region, which is became a scene of tensions between the Seljuqs and the Byzantines after the Malazgirt Victory, was completed at the time of the Chobanoghlu Border Emirate. As it turns out, Gideros fortress was the last center of Byzantium resistance in this area. Rising above Gideros Cove on the Black Sea coast of today's Cide district, this fortress took in its control a important port of Kastamonu region. As a result of our researches, we have reached a victory announcement about the conquest of Gideros in Rajab of 683 / September-October of 1284 by Muzaffar al-Din Yavlak Arslan, the ruler of Chobanoghlu Border Emirate. The announcement, which was writen by his secretary Husam al-Din Hassan b. Abd alMumin al-Khoyi, has been translated from Persian to Turkish and evaluated within the scope of current article. This document, which we deal with, draws attention first of all from these view points: it is the only conquest announcement on Kastamonu region, that has reached to our days and it sheds light on the history of the Chobanoghlu Principality. In addition to these, the betting document is also important for the investigation of Seljuq - Byzantine relations in the XIII century, the fortress siege techniques of that period and the tradition of victory announcement writing among the Seljuqs

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