Complex sentence: Cully was portrayed by comic actor Andy Clyde, a veteran of silent films and early talkies, and was famous for playing the hero's sidekick in B westerns through the thirties and forties.
Split into simpler sentences: Cully was portrayed by comic actor Andy Clyde, a veteran of silent films and early talkies. Clyde was famous for playing the hero's sidekick in B westerns through the thirties and forties.