a Roman senator, called by Appian Κίλλων, proscribed in B. C. 43 (Appian, App. BC 4.27), may perhaps be the same as the Cilo, the friend of Toranius and Cicero, whom the latter mentions in B. C. 45. (Cic. Fam. 6.20.)
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.