Charles James was the oldest son of Charles I of England and his wife Henrietta Maria, he was born on 13th May, 1629 and died the same day.
If he had not died and had instead survived, when his younger brother OTL Charles II was born, what would this child have been called?
And if we say Charles James is a cross between his younger brother and his father personality wise, what consequences might this bring for relations with Parliament, foreign policy, and religion?