More prosaically, Gregory's History of the Western Highlands and Isles of Scotland states that: Some traces of this dispute are to be found in public records of the time.
Hector Roy's son, John Glassich Mackenzie, is said to have renewed his father's claim to some or all of the clan's lands and died in mysterious circumstances in Eilean Donan.
[3] In April 1500 Mackenzie obtained a precept of clare constat (a feudal superior's confirmation of his vassal's entitlement to an estate) for Kintail and other lands from James Stewart, Duke of Ross.
[3] Be that as it may, Mackenzie was soon after appointed a lieutenant or guardian of Wester Ross in response to Sir Donald Macdonald of Lochalsh's arrogation of the Lordship of the Isles.
[3] On 13 December 1545, at Dingwall, the Earl of Sutherland entered into a bond of manrent with Mackenzie for mutual defence against all enemies, reserving only their allegiance to Queen Mary.
Two years later, although by then an old man, he joined the muster called by the Earl of Arran at Musselburgh for the Queen's protection and took part in the Battle of Pinkie Cleugh, where he was again captured - and on this occasion released, after the payment of a considerable ransom.