'''Eusebius''' (260-340) was the bishop of Caesarea on the coast of [[Palestine]] and a Church [[historian]]. His 'Ecclesiastical History' is the principal source for the history of [[Christianity]], especially the Eastern Church, from the Apostolic era until his own day.
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'''Eusebius''' (260-340) was the bishop of Caesarea on the coast of [[Palestine]] and a Church [[historian]]. His ''Ecclesiastical History'' is the principal source for the history of [[Christianity]], especially the Eastern Church, from the Apostolic era until his own day.