The Wikipedia article on the Macartney Baronets makes the unusual claim that the "heir apparent" [not even "heir presumptive"] is one " Lord Clancarte, Jonathan Charles McCarten 10th Earl of Clancarte".
Is this a joke, or is he someone omitted in all known Peerage works?
I note that though the apparent Heir Presumptive must be known, no one is so designated in the Debrett's editions I have,possibly because the Baronet himself has not had his name entered on the Roll?