Simon Demadid

Simon Demadid was the second wife of Antiochos I who married her after he imprisoned his first wife Zosime for trying to murder his son Seleukos II. She would later marry Seleukos herself.

She had earlier been married to the fames strategos Patrokles.

She proved to be skilled diplomat, going to long measures to ease the minds of Antiochos' satraps that the realm was in good hands while he was away campaigning.