 According to Irish tradition they are a Milesian people descended from Colla-da-Chrioch, the first king of Airgialla.The family of the name 'Mac Cana', were known as lords of Clanbrassil.They were a branch of the Cenel Eoghain, the large group of Northern Uí Néill septs claiming descent from King Eógan mac Néill, the son of the High King Niall of the Nine Hostages.