The Book of Armagh declares the High King of Ireland, Brian Boru to be “Imperator Scottorum” or “Emperor of the Irish”. Ireland was named by the Romans “Scotia” and its people Scoti. The invasion of Irish tribes of northern Britain led it to acquiring the name “Scotland” or land of the Irish.
A 9th century philosophiser working on the continent writes his name as Johannes Scotus Eriugena - John the Irishman born in Ireland (Ériu-gena/born) as opposed to Scotland. Almost three centuries before Isadore of Seville wrote that Ireland and Scotland were the same country. Later the lands were distinguished as Scotia Major (Ireland) and Scotia Minor (Scotland). Hibernia is also a Roman term for the Island of Ireland and can be translated as “the land of eternal winter” or “wintry”. It is sometimes claimed that the name Hibernia derives from the ancient Greek name for the island Iouerníā (written Ἰουερνία) an alteration of the Q-Celtic name Īweriū. A variant Ierne was also used; Claudian 395 AD says “When the Scots put all Ireland in motion (against the Romans), then over heaps of Scots the Icy Ierne wept”. In other words many Irish were killed when they attacked the Romans in Britain.
Image: Sculpture of King Brian Boru, Chapel Royal, Dublin Castle