That is excellent!
We stayed in Stuart Castle near Inverness, built by the 3rd Earl Moray,
James Stewart. Your Earl is undoubtedly a relative if not a direct descendant.
that castle stay was one of the top ten experiences of my life. DH and I went once, and several years later brought relatives to stay in the castle. Google it! It is so charming!
Edited to add:I looked ip the Earls of Moray (and I know they were very powerful) and see that 6th Earl is, indeed, g-grandson of the Castle builder.
edited to add more: ooooooo, I see they/you have Cawdor Campbells in their/your bloodline. That is so very exciting! I love Cawdor Castle! Is it also near
Inverness and is currently open to the public with great gardens.
There is a fascinating book by Lisa Campbell about her life growing up in that castle,with a crazy father.