Father of Sopater of Beroea, who was one of the companions of Paul on his final journey to Jerusalem (Acts 20: 4). It does not seem that Pyrrhus was himself one of the party.
Citation for Pyrrhus
Citation styles are based on the Chicago Manual of Style, 15th Ed., and the MLA Style Manual, 2nd Ed..
MLA
"Pyrrhus." In A Dictionary of the Bible. Ed. W. R. F. Browning. Oxford Biblical Studies Online. May 23, 2013. <http://www.oxfordbiblicalcstudies.com/article/opr/t94/e1564>.
Chicago
"Pyrrhus." In A Dictionary of the Bible. , edited by W. R. F. Browning. Oxford Biblical Studies Online, http://www.oxfordbiblicalcstudies.com/article/opr/t94/e1564 (accessed May 23, 2013).