Kaykhusraw I, the eleventh and youngest son of Kilij Arslan II, succeeded his father in 1192. He ruled 1192-1196 and 1205-1211, but had to fight his brothers for control of the Sultanate. He married a granddaughter of the Byzantine emperor Manuel I Komnenos. In 1207 he seized Antalya from its Frankish garrison and furnished the Seljuq state with a port on the Mediterranean. According to Niketas Choniates, he was killed in single combat by Theodore I Laskaris, the emperor of Nicaea, during the Battle of Antioch on the Meander. |  |