As a kid I grew up on 50s tv western repeats. I think it's fair to say before Gunsmoke and Wagon Train most of the films of the genre were aimed at kids.
Of coures there was The Lone Ranger, but it didn't look so convincing when it was rerun in the UK in the 80s, it looked like it was shot in someone's back garden. At the same time a UK shashbuckler from the 1950s also repeated was Conrad Phillips in William Tell, both shows were introduced by the William Tell Overture, which was slow down for the UK show.
In the UK it was called Champion The Wonder Horse (In reality Gene Autry's horse), where a free Stallion allows a kid called Ricky to ride him. In their adventure's when things got tough Ricky's Uncle Sandy and dog Rebel would come along and save the day.http://youtu.be/-5i_pEYGe1o
The actor who played Uncle Sandy also featured in a small role in the tv series Casey Jones. It starred Alan Hale jnr as the famous engineer, who knew how to look after himself. He also had a wife and a sonhttp://youtu.be/ig3GcDBjQN4
I only saw Wild Bill Hickock briefly, but it was the first time I saw the talented underrated Guy Madison, who played U.S Marsahal Hickock. Andy Devine played his side-kick and fellow Marshal Jingles.http://youtu.be/peNfnQEXVKU
I know it was the 60s, but I wanted to add Bronco, which starred Ty Hardin to my list