Easton's Bible Dictionary (1897)
Fourth, a Corinthian Christian who sent by Paul his salutations to friends at Rome (Rom. 16:23).
Smith's Bible Dictionary (1863)
(fourth), a Christian of Corinth, (Romans 16:23) said to have been one of the seventy disciples, and afterward bishop of Berytus. (A.D. about 50.)
Hastings' Dictionary of the Bible (1898) & Schaff's Bible Dictionary
QUAR'TUS (forth). a Christian who lived at Corinth and sent, through Paul, his salutations to the Christians in Rome. Rom 16:23.
Hitchcock's Bible Names (1869)
fourth