The fifteenth century thus saw the last of the great Celtic tribes broken up; but while this process of disintegration from external influence had thus overtaken the greater tribes or _Mortuath_ one after another, their extinction as leading features in the Celtic tribal organisation did not disclose the lesser tribes or _Tuaths_ in their entirety. They, too, had been undergoing a process of internal change similar to that which had affected the Irish tribes and led to the development of the septs or clans, gradually severed more and more from the parent tribe, till the bond of union between them became impaired, and all tradition of their earlier existence as members of a larger organisation became lost. But while the original tribe had ceased thus to exist in that part of the country which retained its Gaelic population, as an actual element in its social organisation, it left an evidence of its previous existence in the lesser districts into which the larger territories were divided, and which still remained as a geographical feature; where an officer bearing the name and some of the functions of the ancient _Toisech_ of the _Tuath_ is still found in connection with some of them. This was the _Toshachdoracht_ or office of _Toschachdoir_, which was considered equivalent to Coroner. It was rendered in Latin by _capitalis legis_, and signified in English, principal of law. Thus, in that part of the great district of Argyll which formed the original kingdom of Dalriada, we find the districts of Cowall, Kintyre in its largest sense, and Lorn, obviously representing the ancient _Tuaths_ into which the population of the kingdom had been divided, and we likewise find Archibald, Master of Argyll, granting in 1550 to Campbell of Ardkinlas the office of Coroner, _alias Thoshisdoir_, viz., _Tosheochdorachtie_ of the lands of Cowall, from Claychin Toskycht to the Points of Toward and Ardlawmonth.[414] In 1539 Alane M‘Lane was appointed by King James V. _Toschachdoir_ of all Kintyre, from the Mull to Altasynach;[415] and the same king appointed, in 1542, Neill mac Neill to the same office.[416] In 1455, John, Earl of Ross and Lord of the Isles, confirms to Neill mac Neill a grant made by his father, Alexander, Earl of Ross and Lord of the Isles, to Torquel M‘Neill, constable of the castle of Swyffin, the father of Neill, of the office called _Toshachdeora_ of the lands of Knapdale.[417] In 1447 we find Sir Duncan Campbell as king’s lieutenant within the parts of Argyll, granting to Reginald Malcolmson, of Craignish, the offices of Steward, _Tosachdoir_, and Mair of the whole land of Craignish, and the office of _Tosachdoir_, _ex parte regis_, within the same bounds; when the heir was under age, to be held by his tutor, with consent of his clan, viz., the Clandowil Cragniche.[418] In 1572, Archibald, Earl of Argyll, grants to Colin Campbell of Barbrek certain lands with the coronership of the lands and baronies of Glenurquhay, the two Lochaws,