Eocha was succeeded in the kingdom by Muredach, the son of Ainbhceallach, of the race of Lorn. His reign was short and unfortunate. In revenge for an act of perfidy committed by Dungal, the son of Selvach, who had carried off Forai or Torai, the daughter of Brude, and the niece of Ungus, the great Pictish king, the latter, in the year 736, led his army from Strathearn, through the passes of the mountains into Lorn, which he wasted with fire and sword. He seized Dunad, in Mid-Lorn, and burned Creic, another fortress in the Ross of Mull, taking Dungal and Feradach, the two sons of Selvach, prisoners. Muredach went in pursuit of his enemy, and having overtaken him at Knock Cairpre, at Calatros, on the shores of the Linne,[100] a battle ensued, in which the Scots were repulsed with great slaughter. Talorgan, the brother of Ungus, commanded the Picts on this occasion, and pursued the flying Scots. In this pursuit Muredach is supposed to have perished, after a reign of three years.
Eogban or Ewan, the son of Muredach, took up the fallen succession in 736, and died in 739, in which year the Dalriadic sceptre was assumed by Aodh-fin, the son of Eocha’ III., and grandson of Eocha’-rineval, descended from the Fergusian race of Gauran. In 740 he measured his strength with the celebrated Ungus; but victory declared for neither, and during the remainder of Ungus’ reign, he did not attempt to renew hostilities. After the death of Ungus, in 761, Aodh-fin declared war against the Picts, whose territories he entered from Upper Lorn, penetrating through the passes of Glenorchy and Breadalbane. In 767 he reached Forteviot, the Pictish capital in Strathearn, where he fought a doubtful battle with Ciniod the Pictish king. Aodh-fin died in 769, after a splendid reign of thirty years.[101]
Fergus II., son of Aodh-fin, succeeded to the sceptre on the demise of his father, and died after an unimportant reign of three years. Selvach II., the son of Eogan, assumed the government in 772. His reign, which lasted twenty-four years, presents nothing very remarkable in history.
A new sovereign of a different lineage, now mounted the throne of the Scots in 796, in the person of Eocha or Auchy, the son of Aodh-fin of the Gauran race. Eocha’ IV. is known also by the latinized appellation of Achaius. The story of the alliance between Achaius and Charlemagne has been shown to be a fable; although it is by no means improbable that he entered into an important treaty with the Picts, by marrying Urgusia, the daughter of Urguis, an alliance which, it is said, enabled his grandson Kenneth afterwards to claim and acquire the Pictish sceptre, in right of Urgusia his grandmother. Eocha died in 826, after a happy and prosperous reign of thirty years. He was succeeded by Dungal, the son of Selvach II., of the race of Lorn, being the last of that powerful family who swayed the Dalriadic sceptre. After a feeble but stormy reign of seven years, he died in 833.
Alpin, the last of the Scoto-Irish kings, and the son of Eocha IV. and of Urgusia, now mounted the throne. He was killed in 836, near the site of Laicht castle, on the ridge which separates Kyle from Galloway. The fiction that Alpin fell in a battle with the Picts, when asserting his right to the Pictish throne, has long been exploded.
In 836 Kenneth, the son of Alpin, succeeded his father. He was a prince of a warlike disposition, and of great vigour of mind and body. He avenged the death of his father by frequent inroads among the people dwelling to the south of the Clyde; but the great glory of his reign consists in his achievements against the Picts, which secured for him and his posterity the Pictish sceptre. The Pictish power had, previous to the period of Kenneth’s accession, been greatly enfeebled by the inroads of the Danish Vikingr; but it was not till after the death of Uven, the Pictish king, in 839, after a distracted reign of three years, that Kenneth made any serious attempt to seize the Pictish diadem. On the accession of Wred, Kenneth, in accordance with the principle of succession said by Bede to have prevailed among the Picts, claimed the Pictish throne in right of Urgusia, his grandmother; Wred died in 842, and after an arduous struggle, Kenneth wrested the sceptre from Bred, his successor, in 843, after he had reigned over the Scots seven years.
Burton[102] thinks there can be no doubt that the two countries were prepared for a fusion whenever a proper opportunity offered, but that this was on account of a matrimonial alliance between the two royal houses cannot with certainty be ascertained.[103] As we have said already, it is extremely improbable that Kenneth gained his supremacy by extermination. The Picts certainly appear to have suffered severe defeat, but the likelihood is that after Kenneth succeeded to the throne, a gradual fusion of the two people took place, so that in course of time they became essentially one, speaking one language, obeying the same laws, and following the same manners and customs. If we knew for certain to what race the Picts belonged, and what language they spoke, it might help us not a little to understand the nature and extent of the amalgamation; but as we know so little about these, and as the chroniclers, in speaking of this event, are so enigmatical and meagre, we are left almost entirely to conjecture. We are certain, at any rate, that from some cause or other, the kings of the Dalriadic Scots, about the middle of the 9th century, obtained supremacy over at least the Southern Picts, who from that time forward ceased to be a separate nation.[104]
The history of the Scoto-Irish kings affords few materials either amusing or instructive; but it was impossible, from the connexion between that history and the events that will follow in detail, to pass it over in silence. The Scoto-Irish tribes appear to have adopted much the same form of government as existed in Ireland at the time of their departure from that kingdom; the sovereignty of which, though nominally under one head, was in reality a pentarchy, which allowed four provincial kings to dispute the monarchy of the fifth. This system was the prolific source of anarchy, assassinations, and civil wars. The Dalriads were constantly kept in a state of intestine commotion and mutual hostility by the pretensions of their rival chiefs, or princes of the three races, who contended with the common sovereign for pre-eminence or exemption. The dlighe-tanaiste, or law of tanistry, which appears to have been generally followed as in Ireland, as well in the succession of kings as in that of chieftains, rather increased than mitigated these disorders; for the claim to rule not being regulated by any fixed law of hereditary succession, but depending upon the capricious will of the tribe, rivals were not found wanting to dispute the rights so conferred. There was always, both in Ireland and in Argyle, an heir presumptive to the Crown chosen, under the name of tanist, who commanded the army during the life of the reigning sovereign, and who succeeded to him after his demise. Budgets, and committees of supply, and taxes, were wholly unknown in those times among the Scots, and the monarch was obliged to support his dignity by voluntary contributions of clothes, cattle, furniture, and other necessaries.
There is reason to believe that tradition supplied the place of written records for many ages after the extinction of the Druidical superstition. Hence among the Scots, traditionary usages and local customs long supplied the place of positive or written laws. It is a mistake to suppose, as some writers have done, that the law consisted in the mere will of the Brehon or judge. The office of Breitheamhuin or Brehon was hereditary, and it is quite natural to infer, that under such a system of jurisprudence, the dictum of the judge might not always comport with what was understood to be the common law or practice; but from thence, to argue that the will of the judge was to be regarded as the law itself, is absurd, and contrary to every idea of justice. As the principle of the rude jurisprudence of the Celtic tribes had for its object the reparation, rather than the prevention of crimes, almost every crime, even of the blackest kind, was commuted by a mulct or payment. Tacitus observes in allusion to this practice, that it was “a temper wholesome to the commonwealth, that homicide and lighter transgressions were settled by the payment of horses or cattle, part to the king or community, part to him or his friends who had been wronged.” The law of Scotland long recognised this system of compensation. The fine was termed, under the Brehon law, eric, which not only signifies a reparation, but also a fine, a ransom, a forfeit. Among the Albanian Scots it was called cro, a term preserved in the Regiam Majestatem, which has a whole chapter showing “the cro of ilk man, how mikil it is.”[105] This law of reparation, according to O’Connor, was first promulgated in Ireland, in the year 164.[106] According to the Regiam Majestatem, the cro of a villain was sixteen cows; of an earl’s son or thane, one hundred; of an earl, one hundred and forty; and that of the king of Scots, one thousand cows, or three thousand oras, that is to say, three oras for every cow.