Y Gododdin (pronounced ) is a medieval Welsh poem consisting of a series of elegies to the men of the Brittonic kingdom of Gododdin and its allies who, according to the conventional interpretation, died fighting the Angles of Deira and Bernicia at a place named Catraeth in c. AD 600. It is traditionally ascribed to the bard Aneirin and survives only in one manuscript, the Book of Aneirin.