The ancient geographer Ptolemy (2nd. cent. ad) used the name Iverni for what he perceived to be a section of the Irish people. Modern commentators have deduced that he derived this from the Érainn people of early Ireland, specifically their subdivision, the Corcu Loígde of what is today Co. Cork. In the early 20th century the anglicized term ‘Ivernian’ was often used to denote the ancient Irish people as a whole. See also IRELAND.