John IV Laskaris of the restored Eastern Roman Empire is deposed and blinded by orders of his co-ruler Michael VIII Palaiologos.
John IV Doukas Laskaris (or Ducas Lascaris) (Greek: Ἰωάννης Δούκας Λάσκαρις, Iōannēs Doukas Laskaris) (December 25, 1250 – c. 1305) was emperor of Nicaea from August 16, 1258, to December 25, 1261. This empire was one of the Greek states formed from the remaining fragments of the Byzantine Empire, after the capture of Constantinople by Roman Catholics during the Fourth Crusade in 1204.