triphylian

In the south, not only was Greece in general dependent on Macedonia, but a large portion of it including all Thessaly in its widest sense from Olympus to the Spercheius and the peninsula of Magnesia, the large and important island of Euboea, the provinces of Locris, Phocis, and Doris, and lastly, a number of isolated positions in Attica and in the Peloponnesus, such as the promontory of Sunium, Corinth, Orchomenus, Heraea, the Triphylian territory was directly subject to Macedonia and received Macedonian garrisons; more especially the three important fortresses of Demetrias in Magnesia, Chalcis in Euboea, and Corinth, "the three fetters of the Hellenes."

Theodor Mommsen - The History of Rome, Book III : From the Union of Italy to the Subjugation of Carthage and the Greek States

In the south, not only was Greece in general dependent on Macedonia, but a large portion of it including all Thessaly in its widest sense from Olympus to the Spercheius and the peninsula of Magnesia, the large and important island of Euboea, the provinces of Locris, Phocis, and Doris, and lastly, a number of isolated positions in Attica and in the Peloponnesus, such as the promontory of Sunium, Corinth, Orchomenus, Heraea, the Triphylian territory was directly subject to Macedonia and received Macedonian garrisons; more especially the three important fortresses of Demetrias in Magnesia, Chalcis in Euboea, and Corinth, "the three fetters of the Hellenes."

Theodor Mommsen - The History of Rome (Volumes 1-5)