Eumenes II
In 188 BC, Cappadocia was accepted as a Roman ally. Later that year, Stratonice married King Eumenes II of Pergamon, based on an arrangement between her father and Eumenes II. The Kingdom of Pergamon, like Cappadocia, were allies of Rome. Eumenes II and Stratonice were distantly related, as they were direct descendants of Seleucus I Nicator.