I have never seen this series, but it looks like it must have been a good one. Steve Forrest, younger brother of Dana Andrews, is perhaps best known as Lt. Dan "Hondo" Harrelson in the 70's series S.W.A.T. He is also recognized by Gunsmoke fans as a frequent guest of that series, usually as a heavy.
I have found a few sites that sell DVDs of the entire series The Baron, but they come in 8 disc sets, and are rather pricey. I'll keep looking to see if I can find some that are more in my and most peoples' price range.