Kayqubad I

Kayqubad I was the Seljuq Turkish Sultan of Rûm who reigned from 1220 to 1237.
 References 
Cahen, Claude (1997). "Kaykubad; Kaykubad I". In Van Donzel, E.; Lewis, B.; Pellat, Ch. (eds.). The Encyclopaedia of Islam. Vol. IV. Brill. pp. 817–818.