It is not intended here to discuss whether Hugh of Sleat and his elder brother Celestine of Lochalsh were illegitimate or not. They were so called by their father, Earl Alexander, and by their brother, Earl John. The first describes Celestine as "filius naturalis" in a charter preserved in the Mackintosh charter chest, dated 1447, and Earl John calls his brother Austin or Hugh "frater carnalis" in two charters, dated respectively 1463 and 1470. This goes far to corroborate the Sleat historian, who was not the least likely to introduce illegitimacy into his own favourite family unless the charge was really true. It is instructive to find that Celestine succeeded to all the lands of the monastery of Applecross in Lochalsh, Lochcarron, and Lochbroom. These lay abbots are also said to have held, under the old Earls of Ross, the Sleat district of the Isle of Skye, which Hugh, first of that family, is alleged to have inherited through his mother, daughter of the Red Priest and a descendant of Farquhar Mac an t'Sagairt, Earl of Ross. It will be observed also that Austin, Uisdean, or Hugh, a common name among the Applecross and old Earl of Ross dynasty, comes into the Macdonald family for the first time at this period, after Earl Alexander of the Macdonald line had formed a union with the daughter of the last lay Abbot of Applecross. Skene distinctly affirms that Hugh Macdonald of Sleat was the son of Earl Alexander by a daughter of this Gille-Padruig ('Celtic Scotland,' Vol. III. p. 298) while Gregory suggests that the words naturalis and carnalis used by Hugh's father and brother in the charters already quoted "were used to designate the issue of those handfast or left-handed marriages which appear to have been so common in the Highlands and Isles." ['Western Highlands and Isles,' p.41] Whether the Sleat district of Skye was or was not carried for the first time to the Macdonald Earls of Ross and Lords of the Isles by this union with a member of the family of the original O'Beolan Earls, it is perfectly clear that the latter had an intimate connection with the Sleat district at a much earlier period.