In the struggle between
Izz al-Din Kaykaus (1246–1260) and his rival
Kilidj Rukn al-Din Arslan IV Karaman supported the first. But Kilidj Rukn al-Din Arslan with the help of Parvaneh (
Parvana) Sulayman Muin al-Din who was the one who had the real power, and
the Mongols, managed to eliminate most of the hostile emirs or begs, but could not capture or kill Karaman and thus, tried to appease him by granting him
Larandia and
Ermenek and by giving his brother Buñsuz the position of amir djandar in
Konya. The fall of Izz al-Din is said to have been one of the causes and possibly was the occasion of or pretext for his uprising. Izz al-Din was regarded, relatively speaking, as an ally of the Turcomans against the Mongols, and the efforts of Rukn al-Din to win the support of the Karamanids were in vain. Karaman Bey expanded his territories by capturing castles in
Ermenek,
Mut,
Ereğli,
Gülnar, Mer and
Silifke. The year of the conquests as indicated in the Encyclopedia of Islam (vol. IV, page 643) is 1225, during the reign of Ala al-Din
Kaykubadh I (1220–1237), which seems excessively early. Karaman Bey's conquests were mainly at the expense of
the Kingdom of Lesser Armenia (and perhaps at the expense of Rukn al-Din Kilidj Arslan IV, 1248–1265). He fought against
the Armenians on the Isaurian-Cilician borders to such extent that
King Hethum I (1226–1269) had to place himself voluntarily under the sovereignty of
the great Khan, in order to protect his kingdom from
Mamluks and
Seljuks (1244). King
Hethum I had to intervene several times, and succeeded in repulsing Karaman. He founded his
beylik which was already semiautonomous during his father's reign. The
Seljuks, who were their nominal suzerains, were defeated by the
Mongols and the Karamans had no problem to settle in the northern slopes of the
Toros Mountains close to
Konya, the Seljuk capital. The Seljuk Sultan, afraid of the Karamans increasing power, gave him some towns as
ikta ( fief) . The city of
Karaman (ancient Larende) bears his name. Karaman fought against the
Armenian Kingdom of Cilicia and expanded his territory. == Conflict with the Seljuqs ==