The Song of Dermot and the Earl is an anonymous Anglo-Norman verse chronicle written in the early 13th century in England. It tells of the arrival of Richard de Clare (Strongbow) in Ireland in 1170, and of the subsequent arrival of Henry II of England. The poem mentions one Morice Regan, secretary to Diarmaid mac Murchadha, king of Leinster, who was eyewitness to the events and may have provided an account to the author.