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Achaicus - a Corinthian Christian, one of the Seventy Disciples, who according to the Bible, together with Fortunatus and Stephanas, carried a letter from the Corinthians to St. Paul, and from St. Paul to the Corinthians (1 Corinthians 16:17; cf. also 16:15)[1].
Achaicus is venerated as saint by Eastern Orthodox Church, Roman Catholic Church and other Christian Churches.