I recently watched it on latenight TV. It was definitely Charles Bronson. Might they have made two versions?
I checked the IMDB listing for Bronson and his lone appearance on Twilight Zone was in this review “Two survivors of an apocalyptic battle, a man and a woman from each opposing sides, approach each other suspiciously” and he starred with Elizabeth Montgomery.
http://www.imdb.com/title/tt0734686/
Twilight Zone did at least three or four “Adam and Eve” episodes. You’re right, there was one with Charles Bronson. I can’t remember the name of the girl and I’m too lazy to look it up, but she was in other things here and there in the 1960’s — one that comes to mind immediately is a Star Trek episode where they go to a planet and she’s (coincidentally) a witch that turns into a cat and back again. At the end of the show Kirk breaks her magic wand and she and her warlock turn into “their true forms” of some kind of creepy little animal.