Seleucus IV Philopator
…after the death of his elder brother Antiochus the young king, in 193 BC. Seleucus IV wed his sister Laodice IV, by whom he had three children: two sons Demetrius I Soter, Antiochus and a daughter Laodice V. During the prelude to the Roman-Seleucid War, Seleucus was put in charge of the re-established colony of Lysimacheia…