Galatia Timeline

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  • 278 BCE
    The Galatians are invited over into Anatolia by Nicomedes I of Bithynia to help fight against the forces of Pontus.
  • 261 BCE
    Antiochus I Soter of the Seleucid Empire killed in battle against the Galatians at Ephesus in Asia Minor.
  • 246 BCE
    Galatians defeat Seleucus II in a battle near Ancyra.
  • c. 237 BCE - 241 BCE
    Attalus I of Pergamon defeats the Galatians at the headwaters of the Caioc River.
  • 232 BCE
    Attalos I defeats the Galatians a second time.
  • 228 BCE
    Ziaelas, king of Bythinia, is killed by Galatian generals at a feast in a fool's game.
  • 218 BCE
    The Aegosages Celts enter Anatolia under Attalos of Pergamon.
  • c. 200 BCE
    The main centers of the Galatians are known as capitols of the three main tribes: Ankyra to the Tectosages, Tavium to the Trocmi, and Pessinus to the Tolistoboii.
  • 191 BCE
    Antiochus III and his army, including many Galatians, are defeated by Rome at Magnesia.
  • 189 BCE
    Manlius Vulso attacks the Galatians for fighting alongside Antiochus III and scores two victories in Galatia at Mount Magaba and Mount Olympus.
  • 88 BCE
    Mithradates V commits the 'Massacre of the Tetrarchs', killing nearly all of the 60 Galatian chiefs to dine with him. Deiotaros survives.
  • 74 BCE
    Deiotaros drives out Zeumachus, Mithradates appointed governor of Galatia.
  • 64 BCE
    Galatia becomes a client state of Rome.
  • 25 BCE
    Galatia is peacefully absorbed into the Roman Empire.