Creedence came from Tom Fogerty's best friend Credence. Clearwater came from their concern about the enviroment. Revival came from them renaming the band after ten years of playing together.
Tom Fogerty's friend Credence Newball, (to whose first name Credence they added an extra 'e', making it resemble a faith or creed); secondly, "clear water" from a TV commercial for Olympia beer; and...