Title

This might be a silly question but I'm still going to ask it. Why are the reruns marketed as Make Room for Daddy when the majority of the series went by the name The Danny Thomas Show? The only reason I can come up with is Make Room for Daddy was the original title, but it was only the title for three seasons, where as The Danny Thomas Show was the title for 8 seasons, 73% of the show's run.

This isn't a big deal, I'm just curious.