Constantine

(noun) Emperor of Rome who stopped the persecution of Christians and in 324 made Christianity the official religion of the Roman Empire; in 330 he moved his capital from Rome to Byzantium and renamed it Constantinople (280-337). Synonyms: Constantine I, Constantine the Great, Flavius Valerius Constantinus.

(noun) a walled city in northeastern Algeria to the east of Algiers; was destroyed in warfare in the 4th century and rebuilt by Constantine I.