Kaykavus I, Seljuk Sultan of Rum
r. 1211-1220/608-616 AH
Turkey
Seljuk sultan Kaykavus I reigned during the first quarter of the thirteenth century, a period in which the Seljuk Sultinate of Rum was rising in power and prestige in Central Anatolia. Most significantly, Kaykavus I oversaw the conquest of the port cities of Sinop on the Black Sea and Antalya on the Mediterranean, which would be key to the flourishing trade that developed during the following decades between the Seljuks and other Mediterranean principalities. He is known for his patronage of a hospital and clinic (darüşşifa) in Sivas, which also includes his tomb.

Sources:

Faruk Sümer. Türkiye Diyanet Vakfı İslâm Ansiklopedisi, s.v. "Keykâvus I." http://www.islamansiklopedisi.info  
(accessed October 4, 2017).
Associated Sites
Variant Names
Kaykavus I, Seljuk Sultan of Rum
عز الدين كيكاوس بن كيخسرو
Original
Izz al-Din Kaykavus ibn Kaykhusraw
Transliterated
Izz al-Din Kaykawus
Alternate transliteration
Izz al-Din Kayka'us
Alternate transliteration
Izz al-Din Kay Kavus
Alternate transliteration
Izzeddin Keykâvus
Alternate transliteration
İzzeddin Keykâvus I, Sultan of the Seljuks, -1220
Translated
Kaykavus I
Alternate
Keykâvus I
Alternate
Kaykāʾūs I
Alternate
Kay Kavus I
Alternate