Lady Antonia Fraser’s “The Kings and Queens of England” was a favourite of mine nearly forty years ago – my grandmother owned it and I read it whilst visiting her.
Anyway, I consulted the entries on Charles II and James II – Maurice Ashley wrote the Stuart chapter and he said:
1) (p.236) “(the Rye House Plot) …….. an alleged conspiracy to murder the King on his way from Newcastle races ……….”
Newmarket races, actually. There would be no means of watching racing at Newcastle and being in London that night in 1683.
2) (p.242) ” …….. the Marquis of Argyll …….”
The Marquis of Argyll was executed and attainted in 1661 – his son, the other 1685 rebel, was restored as a mere Earl.
I wouldn’t dare to check what Anthony Cheetham said about Richard III.