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Cyclopedia of Biblical, Theological and Ecclesiastical Literature
Formerly, in some cathedrals, there was a dignitary so named: he was the chief of the acolyths, as the archpriest, archdeacon, and archsubdeacon were of their respective orders.
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McClintock, John. Strong, James. Entry for 'Archacolyth'. Cyclopedia of Biblical, Theological and Ecclesiastical Literature. https://www.studylight.org/encyclopedias/eng/tce/a/archacolyth.html. Harper & Brothers. New York. 1870.
the Fourth Week after Epiphany