[jfengel]

Two things:

1. The UK parliament reversed course and brought back Charles I's son to be Charles II. In doing to it executed a ton of people responsible for revolt. That included Oliver Cromwell -- despite the fact that he was already dead. They dug him up, tried him, convicted him, executed him, and put his head on a spike for decades. So it's not clear how much power that precedent could hold.

2. Charles III is King of the United Kingdom. The title of "King of England" was retired by Charles I's father. Charles I was King of Great Britain.

[tialaramex]

I don't know that I'd go so far as to say reversed course. Things didn't go well for Cromwell and the people who executed Charles I but also stuff didn't revert. Charles II is not a modern monarch but when Parliament does stuff he doesn't like he feels obliged to try to dodge that rather than defy them as his father did.