 Muirchú moccu Machtheni

Muirchú moccu Machtheni (), usually known simply as Muirchú, (born sometime in the seventh century) was a monk and historian from Leinster.He wrote the , known in English as "The Life of Saint Patrick", one of the first accounts of the fifth-century saint, and which credits Patrick with the conversion of Ireland in advance of the spread of monasticism.