My thought, too. There are a lot of things named "Charles" in Boston, though, because they didn't rename the river.
Some place names were changed after the Revolution. Charleston, SC was originally Charles Town, and just changing the spelling was enough after the Revolution. Boston's State Street was once King Street. Crown Street in New York became Liberty Street. A King Street became Pine Street and Queen Street became Cedar, but as the city grew there was room for more King and Queen Streets.
There was this, though:
