To the best of my knowledge, it was Mary Campbell who married into the Stewarts of Appin. I would love to be able to find out more, but there are very few existing registries. IF John Stewart married Mary Campbell, it would probably have been at the Chruch of Lawers, of which no existing registries remain. This connection, seeing as there was no longer any nobility lineage to it, would not appear in the Burke's peerage, though John Stewart of Appin does, as does the info concerning the Lady of Lawers.
Charles, you say that you've provided us with evidence. In fact you've shied away from answering questions about the very details on which the shaky edifice of your claim to royal descent is based. Two years ago you abandoned a completely different claim involving a different John Stewart, supposedly the son of the 5th Earl of Moray, when it was explained to you that he died without issue. If you're reading this I'd like you to come back and answer just three questions:
Where in
Burke's Peerage is this John Stewart mentioned, other than as a son of Duncan Stewart who
also died without issue?
On what evidence do you base your claim that Mary Campbell was the Lady of Lawers, and why didn't you mention it as a citation for the Wikipedia article? The folkloric versions of the tale I found on various websites disagree on her Christian name - some say this wasn't even known - but otherwise they all agree that she was a Stewart who married a man from the Campbell family. If you are unable to produce such evidence I'll just have to assume that you simply invented this spurious "link" to bolster your claim to royal descent. If Mary Campbell
is mentioned in Burke's Peerage - I'll check tomorrow when I go to the library - I suspect it will simply be as a daughter of Sir James Campbell, Sheriff of Perthshire.
Finally, do you agree with
Burke's Peerage that Janet Gordon was the daughter of the
3rd Earl of Huntly?
This whole genealogical mess was caused by the fact that you started out with a conclusion and then tortured the facts to fit it. We've seen this scenario over and over again - it's a woo favourite.
By the way, I hate to sound threatening but if you can't come up with a reliable source for your Lady of Lawers story by tomorrow evening I'm going to do a spot of editing myself. Of course, if you agree that the evidence doesn't stand up to scrutiny you could always remove the changes you made.