Although the earliest texts have been lost, excerpts were quoted or paraphrased by later authors. The main islands were called "Ierne", equal to the term Ériu for Ireland, and "Albion" for present-day Great Britain.
Although the earliest records are no longer available, later authors quoted or restated portions of these texts. The main islands were referred to as "Ierne," matching the term Ériu for Ireland, and "Albion" for present-day Great Britain.