2. P. Marcius Rex, was sent by the senate with two colleagues on a mission to the consul C. Cassius Longinus, in B. C. 171. (Liv. 43.1.)
William Smith. A Dictionary of Greek and Roman biography and mythology. London. John Murray: printed by Spottiswoode and Co., New-Street Square and Parliament Street. In the article on Soranus, we find: "at this present time (1848)" and this date seems to reflect the dates of works cited. 1873 - probably the printing date.