This article seems to be a bit misinformed, from what I recall of the situation. The last I heard, there were three claimants, two in the UK, but the one with the best claim was said to be an American who wasn't interested in pursuing it.

The chiefdom hasn't been vacant for over 200 years. It went vacant in the late 19th century.

Also, is it Debrett's or Burke's that has lost credibility as to its accuracy under its current ownership?