Here, we are told, he built a church, and removed to it the relics of St. Columba—that is, probably, only a part of them—in the seventh year of his reign,[577] which corresponds with the year 850, the year after Innrechtach had departed to Ireland with the _Mionna_. Iona, as we have seen, had already lost her primacy over the Columban monasteries in Ireland, which, in consequence of the destruction of her monastery by the Danes, was transferred to Kells; and, in taking the relics to Dunkeld, Kenneth constituted it too as an _Annoid_, or mother church, over the Columbans in Scotland, and seems to have resolved to place the abbot of his new monastery of Dunkeld as bishop over the church in the territories of the southern Picts which had now come under his rule, with a view to the more ready reorganisation of Scottish monasteries within them, so that it should form one diocese, as it were, under one bishop. Accordingly, five years after Kenneth’s death, we find recorded the death of Tuathal mac Artguso, abbot of Dunkeld and first bishop of Fortrenn, as the kingdom of the southern Picts was then called.[578] As abbot of Dunkeld, a church dedicated to St. Columba and possessing part of his relics, he thus occupied towards the Columban monasteries in Scotland the same position as had belonged to Iona, and would be regarded by them as coärb of Columcille. As bishop of Fortrenn he was the recognised head of the Pictish church.[579] The same year in which the death of the first bishop of Fortrenn is recorded contains also the record of the death in the territory of the Picts of Cellach son of Aillel, abbot of Kildare, and abbot of Iona.[580] Nothing can better show how completely Iona had lost her position for the time, and how difficult it now was to find a person to occupy the post of danger, than the abbacy falling to an abbot of Kildare; but, though he is said to have been also abbot of Iona, he did not die either there or in his own monastery of Kildare, but in the country of the Picts. He had probably been driven from his own monastery in the province of Leinster by its exposure to the attacks of the Danes, by whom it was plundered and its church burnt in the year 836; and in 845 its vice-abbot was slain,[581] a title which seems to indicate the absence of the abbot. Kildare was, as we know, dedicated to the great virgin saint of Ireland, St. Bridget, or St. Bride, and was the mother church of all her foundations; but there was within the country of the Picts one church in especial which was also dedicated to St. Bride, and was held to be in a manner affiliated to that of Kildare, and that was the church of Abernethy; and when we find an abbot of Kildare seeking refuge in the Pictish kingdom and dying peacefully within its bounds, it could hardly be elsewhere than in this church of Abernethy that he took refuge; and he appears, when Innrechtach had left his monastery of Iona and been slain on his way to Rome in 854, to have been appointed abbot