I founda DVD set of a western serie called Cimarron City at mylibrary. This series aired the year before Bonanza debuted. Dan Blocker (Hoss) had a recurring role on this series as a Cimarron City resident named Tiny Budinger. Pernell Roberts (Adam) guest starred in an episode as an Irish Outlaw who was living in Mexico and doing bad deeds in America.

I remember Dan Blocker from "Cimarron City."