18. A son of Lysimachus, king of Thrace, who was put to death together with his elder brother Lysimachus, by the usurper Ptolemy Ceraunus, B. C. 281. (Just. 24.3.) [LYSIMACHUS, Vol. II. p. 867a.]
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.