It likely WOULD continue.
Fair enough
The US of A stays british because a true heir instead of dirty German pretenders can actually sympathize with the colonists, and there probably wont be a seven years war, and we'll all sing God save the King/Queen.
I can never remember what the Stuart policy towards the American colonies was, but considering the propensity of the Tudors-Stuarts to be rather mulish/bullheaded, I wouldn't put it past that some son or grandson of Anna Gloria is going to do something stupid to upset the colonial apple cart.
How would Irish unionism fit into this?
How early did it appear in Ireland?
Would Ireland appear to bring in enough profit to offset the apparent loss to Scotland?
Etc etc.
(As you can tell I'm a fan of triple union tls!)
Well, interestingly enough, Ireland might be brought into a union with England sooner than Scotland. While Scotland is the homeland of the Stuarts - as long as there's a descendant of Anne on the throne, the north could be safe. Ireland, however, is Catholic, so there might be fears that James II/III will land there and whip the populace up into an anti-English frenzy. There was a thread once where James II reconquered Ireland, planning to use it as a springboard to reconquer England-Scotland - which never happened TTL, and forged a kingdom of Ireland independent of Britain. English politics might be wary of just such a thing happening and be interested in binding Ireland still closer to London rather than Rome or St. Germaine.