In the long line of mythic pagan monarchs sprung from the sons of Milesius, two come prominently forward as waging war in Scotland, and hence termed kings of Erinn and Alban, and under the second of these a settlement is said to have been made. The first of these imaginary monarchs is Aengus, of the line of Heremon, termed Ollmucadh, from _oll_ great, and _mucadh_ swine, because he is said to have possessed the largest swine in his time in Ireland. According to the Annals of the Four Masters he reigned in the year of the world 3773, or 1421 years before the birth of Christ. He is said to have fought fifty battles against the _Cruithentuath_, or Picts of Scotland, and the Firbolg; twelve battles against the Longbardai, and four battles against the Colaisti, whoever they may be.[122] The second was Reachtaidh Righdearg, or red-wristed, of the line of Heber, who is said in the same Annals to have reigned in the year of the world 4547, or 647 years before the birth of Christ. He led his forces to Alban under Forc and Iboth. ‘They gained great battles, so that great districts were laid waste in Alban, until the men of Alban submitted to Reachtaidh Righdearg, so that he was king of Erinn and Alban, and it was from them sprang the two tribes Tuath Forc and Tuath Iboth in Alban.’[123] These supposed settlements, however, become more frequent and distinct as we pass the birth of Christ and approach the historic period of this early Irish history. Between the Christian era and the fifth century, when Christianity was introduced into Ireland, and something like a true chronological history may be said to commence, two events come prominently forward in this mythic history. The first is the rising of the _Attachtuatha_ or servile class of the population of Ireland, and their massacre of the nobles of Ireland. These _Attachtuatha_ are said to have been the remains of the Firbolg and other colonists who preceded the arrival of the Milesian Scots and formed a population of subject tribes under them, and they have been improperly identified by the Irish historians with the Attacotti of the Roman historians, who were a British nation and belonged to a later period. The story as given in the Leabhar Gabhala, or Book of Conquests, is this.—On the death of Crimthan Nianair, king of Ireland, of the race of Heremon, about ten years after the birth of Christ, the nobility of Ireland were massacred at a great feast at Magh Cro, where they were entertained by the Attachtuatha. They were all cut off except three queens who were pregnant, and went over the sea. One was Baine, daughter to the king of Alban, who gave birth to Feredach Finn Fechtnach, the son of Crimthan. The second was Cruife, daughter to the king of Britain, and mother of Corb Olum of Munster; and the third was Aine, daughter of the king of Saxony, who was mother of Tipraide Tireach, king of the Cruithnigh of Ulster. The Attachtuatha