But the reason Roundheads got their name may have escaped your memory. Back in those days it was usual for a man to have long hair. A man with short-clipped hair was an oddity. With short hair, his head looked round. At least it looked round to people who had long hair.
The counterpart of the Roundhead (also known as Parliamentarians) was the Cavalier, who were Royalists. That is, they supported Charles I. Charles I had long hair. Guess whether Cavaliers had long hair or short hair? Well, no matter, since they would shortly be losing their heads anyway, right?
Roundheads were mostly Puritans or Presbyterians, although not ALL Puritans had short hair. Come to think of it, not ALL Puritans were against the crown either. And not all Puritans with short hair supported republicanism. Ah, well. There were also other factions that were included in the Roundhead realm, like the Diggers. We'll talk about the Diggers some other time, though.
Henrietta Maria was mainly known by the odd way she carried her hands when she walked. Almost like a ballerina who was about to FLING her arms out at any second. Passersby beware. Some say  that she had carpel tunnel syndrome from holding curling irons for extended periods of time. I don't know. It's hard to speculate about something like that. But she sure was Catholic and Mr. Stuart sure did believe in the divine right to rule and lost his head over it.Well, after the restoration, Charles II resumed, restored as it were, with a FIRM grasp of what the term "Constitutional Monarchy" meant. And on and on it went. The Stuarts are best known in history as the snappiest dressers of all British monarchs. No citation needed, just a fact.
The thing that has always puzzled me, though - and this is probably off the Roundhead topic, though perhaps not - is WHY would a future monarch, having the full 20/20 hindsight of history, still go ahead and name her heir Charles? Have you ever thought of that? Don't any of these people believe in bad luck? I am now visualizing the proud parents, beaming down at their new, rather large-eared infant, and suddenly she says, "I know, Phil, let's call it Charles."You are supposed to already know who Henrietta Maria of France was.
Ah, well. Charles III may never come to pass anyhow. Unlikely he'll outlive her. I'm guessing we may be looking at a William V instead. Or, if he does get to the throne for a year or two, he'll have enough historical sense to call himself King Arthur. Either way, I wish him well, and that's a fact.
(He's the one holding his knees tightly together, not the one picking its teeth.)