Battle of Manzikert
Theodoret of Cyrus confirms that the two names, Eirenopolis and Neronias, apparently refer to the same city. The name Neronias refereeing to honors bestowed on the city by Nero. The city is mentioned by Hierocles Nicephore and Calliste. The city came under Muslim rule following the Battle of Manzikert in 1071.