The _Daer-Clanna_, or unfree tribes, have left no history. Under the despotism of the Milesian kings, it was high treason to record the actions of the conquered race; so that the Irish Belgae fared as badly in this respect, at the hands of the Milesian historians, as the latter fared in after times from the chroniclers of the Normans. We only know that such tribes were, and that their numbers and physical force more than once excited the apprehension of the children of the conquerors. What proportion they bore to the _Saer-Clanna_ we have no positive data to determine. A fourth, a fifth, or a sixth, they may have been; but one thing is certain, the jealous policy of the superior race never permitted them to reascend the plane of equality, from which they had been hurled, at the very commencement of the Milesian ascendency. In addition to the enslaved by conquest and the enslaved by crime, there were also the enslaved by purchase. From the earliest period, slave dealers from Ireland had frequented Bristol, the great British slave market, to purchase human beings. Christian morality, though it may have mitigated the horrors of this odious traffic, did not at once lead to its abolition. In vain Saint Wulfstan preached against it in the South, as Saint Aidan had done long before him in the North of England. Files of fair-haired Saxon slaves, of both sexes, yoked together with ropes, continued to be shipped at Bristol, and bondmen and bondwomen continued to be articles of value—exchanged between the Prince and his subordinates, as stipend or tribute. The King of Cashel alone gave to the chief of the Eugenians, as part of his annual stipend, ten bondmen and ten women; to the lord of Bruree, seven pages and seven bondwomen; to the lord of Deisi, eight slaves of each sex, and seven female slaves to the lord of Kerry; among the items which make up the tribute from Ossory to Cashel are ten bondmen and ten grown women; and from the Deisi, eight bondmen and eight "brown-haired" women. The annual exchanges of this description, set down as due in the Book of Rights, would require the transfer of several hundreds of slaves yearly, from one set of masters to another. Cruelties and outrages must have been inseparable from the system, and we can hardly wonder at the sweeping decree by which the Synod of Armagh (A.D. 1171) declared all the English slaves in Ireland free to return to their homes, and anathematized the whole inhuman traffic. The fathers of that council looked upon the Norman invasion as a punishment from Heaven on the slave trade; for they believed in their purity of heart, that power _is_ transferred from one nation to another, because of injustices, oppressions, and divers deceits.