Kaykaus I
Izz ad- Din Kai Kaus I ( also Kaikaus, Turkish I. Izzedin Keykavus, † 1220 ) was from 1211 to 1220 ruler of the Seljuk Sultanate of Rum
Kai Kaus followed in 1211 his father Kai Khosrau I. on the throne. He sat down opposite his brother Kai Kobad I., who did not accept the accession to the throne, by. Kai Kaus ' primary objective was the economic independence of his kingdom. For this he made great efforts. Thus, he concluded with the Kingdom of Cyprus from a trade agreement. To facilitate access to the Black Sea, he wrested the Empire of Trebizond, the city of Sinope. To control the trade route through Syria, he defeated the Armenian small kingdoms in Cilicia.
As Kai Kaus died in 1220, was his brother Kai Kobad I. new Sultan.
Conquest of Sinope
Kai Kaus ' most important success was the conquest of Sinope. 1214 was the Seljuks overpower the Emperor Alexios I of Trebizond during a hunt and capture. The Emperor was brought to the Sultan. In return for his release Alexios I. Sinope handed to Kai Kaus. Now the Rum Seljuks had access to the Black Sea, a land connection across Anatolia to its harbor in Antalya. This wedge is now separated the Empire Nicaea to the Kai Kaus had a good relationship, of Trebizond. In Sinope the ruler built a fleet that took several times trips to the Crimea peninsula.
Kai Kaus put the Armenians Rais Hetoum as governor in Sinope one. 1215 were the city walls renovated under the supervision of the Greeks Sebastos. At this renovation remembered an inscription that was written in Arabic and Greek, on a tower near the western gate.
Alliance with the Crusaders
1218 Kai Kaus turned east. During the Fifth Crusade, he allied himself with the crusaders and attacked the Ayyubids in Syria, while the Crusaders simultaneously attacked Egypt and the Ayyubid so forced into a two-front war. His goal was the conquest of Aleppo. Until 1221 he was, however, repulsed again. Before Kai Kaus could establish a new alliance against the Ayyubids, he passed away.
Structures
1217 was Kai Kaus in Sivas build the Şifaiye Medresese. The building is School and Hospital at the same time. The madrasah also contains the mausoleum of Sultan Kai Kaus.