3. Son of Lysimachus, king of Thrace (see below), by Arsinoe, daughter of Ptolemy Soter.
After the death of his father (B. C. 281), he fled with his mother and younger brother, Philip, to Cassandria, where they remained for some time in safety, until Ptolemy Ceraunus, who had established himself upon the throne of Macedonia, decoyed Arsinoie and her two sons into his power, by promising to marry the former, and adopt the two young men.
But as soon as they met their treacherous uncle, both Lysimachus and Philip were instantly seized and put to death, in the very arms of their mother. Lysimachus was at the time 16 years old; his brother three years younger; and both were remarkable for their beauty. (Just. 24.2
; Memnon, 100.14.)