One ruler of this place formed an alliance with John Asen II after the latter's victory at Klokotnitsa over a rival claimant to the rulers of this place. Another ruler of this place was advised by George Muzalon, and a schism resulted when that man's deposer was excommunicated by Arsenios Autoreianos. John Vatatzes was one ruler of this place, and another killed Kay-Khusraw in battle, and was oppo
One ruler of this place formed an alliance with John Asen II after the latter's victory at Klokotnitsa over a rival claimant to the rulers of this place. Another ruler of this place was advised by George Muzalon, and a schism resulted when that man's deposer was excommunicated by Arsenios Autoreianos. John Vatatzes was one ruler of this place, and another killed Kay-Khusraw in battle, and was opposed by Michael Doukas and David Komnenos. The empire centered here was founded by Theodore Laskaris, and its last ruler was a usurping general named Michael Palaiologos. Opposed by the Despotate of Epirus and the Empire of Trebizond, this city was home to a Byzantine successor state during the Latin Empire. A church council here accepted the veneration of icons, and another set the date of Easter and condemned Arianism. For 10 points, name this Turkish city which names a Christian creed.
One ruler of this place formed an alliance with John Asen II after the latter's victory at Klokotnitsa over a rival claimant to the rulers of this place.
Empire of {Nicaea} (accept {Iznik} )