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.