'Of that Ilk' is genealogical term applied to the hereditary peerages of the Clan chiefs of Scotland. It has something to do with the interaction between between the lordship of somewhere, the leadership of the Clan of that place, and your branch of the family.

The trouble is, the Title 'Lord XZY', and the leadership of the Clan XYZ are separate, although normally held by the same person, and IIRC, follow slightly different rules for how they descend the generations. Of that Ilk simply means of the place, and is seems to be applied with a blunderbuss to the list of Lairds, and I'm not even going to try to understand what the Macdonalds of Macdonald are up to,but I suppose there would have been a fairly limited gene pool in some of the more isolated highland areas...


And if anyone understood that, make your way to the tavern immediately for remedial alcohol, to remove this dangerous knowledge.