"Izz al-Din Kayka'us I" . "'Izz al-Din Kayka'us I" . . "Kaykaus I" . . "Izzeddin Keykavus I" . "\u0130zzettin Keykavus I" . "Kaykaus I" . . . . "Kaykaus I" . . . . . . . . . . . "Kaykaus'" . "Ghiyaseddin Kay-Khusraw I" . . . . "1220" . "Kaykaus" . . "Keykavus I" . . . . "1211" .