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In page 432:

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  • July 27 – Pope Celestine I dies after a 10-year reign in which he led a vigorous policy against Nestorianism. He is succeeded by Sixtus III as the 44th pope.[2]
  • Saint Patrick, Roman Britain-born missionary, is consecrated a bishop and converts the Irish to Christianity until his death around 460.[citation needed]
  • December 25 – Christmas is celebrated for the first time in Alexandria (approximate date).[3]