Cyclopedia of Biblical, Theological and Ecclesiastical Literature
(Ολυμπᾶς , from the same etymology as Olympius [q.v.]), a Christian at Rome, saluted by Paul in his epistle to the Church in that city (Romans 16:15). A.D. 55. The context, perhaps, implies that he was of the household of Philologus. It is stated by pseudo-Hippolytus that he was one of the seventy disciples, and underwent martyrdom at Rome; and Baronius ventures to give A.D. 69 as the date of his death,
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McClintock, John. Strong, James. Entry for 'Olympas'. Cyclopedia of Biblical, Theological and Ecclesiastical Literature. https://www.studylight.org/encyclopedias/eng/tce/o/olympas.html. Harper & Brothers. New York. 1870.