Constantine Laskaris (Greek: Κωνσταντίνος Κομνηνὸς Λάσκαρις, romanized: Kōnstantīnos Komnēnós Láskaris) may have been Byzantine Emperor for a few months from 1204 to early 1205. He is sometimes called "Constantine XI", a numeral now usually reserved for Constantine Palaiologos.
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