says about the next event: "Soon Lysimachus made the fatal mistake of having his son Agathocles (http://en.wikipedia.org/wiki/Agathocles_%28son_of_Lysimachus%29) murdered at the say-so of his second wife, Arsinoe (http://en.wikipedia.org/wiki/Arsinoe_II_of_Egypt) ( 282 BC  (http://en.wikipedia.org/wiki/282_BC)). Agathocles's widow, Lysandra  (http://en.wikipedia.org/wiki/Lysandra), fled to Seleucus, who now made war upon Lysimachus. Seleucus, after appointing his son Antiochus (http://en.wikipedia.org/wiki/Antiochus_I_Soter)