What name did Garth Brooks use before he was Garth Brooks?

He was born, Troyal Garth Brooks (see wikipedia.com) but at after he became famous as Garth Brooks he did make an album under the name Chris Gaines. There was supposed to be a movie about a rock star named Chris Gaines, and Garth wanted to try his hand at rock, so he assumed this alter-ego of Chris Gaines. As it turns out, the movie was never made, but the album was and did pretty well, but many people were confused as to why Garth felt the need to have an alter ego.