Bird I think your right. Here's the way I recall them.
Roy Rogers (TV) Pat Brady BTW is actual name.
Roy Rogers (movies) Smiley Burdette , usually went by Frog
Gene Autry (TV) Pat Buttram
Hopalong Cassidy (movies) Gaby Hayes
I'm also pretty sure Gaby Hayes sidekicked for other matinee cowboys at one time or the other, so you may indeed have seen him with Gene Autry. Since you mentioned Ken Curtis, I saw him perform in the late 70's, and was amazed at how talented he was.
Ernie
<P ID="edit"><FONT SIZE=-1>Edited by ERNIEB on 10/1/00 11:35 PM.</FONT></P>