Like Ralph Cotton and a slew of many others Peter Brandvold is a mighty prolific author. He writes westerns--and damn good ones too! What I love about him most is his prose style. Some call it leathery. I think that is a good description. He is very evocative of place and knows how to write a bang up action scene. He also creates some down right dag nasty hombres. IE Rueben Pacheca the bounty hunter in his 45 Caliber series.
I would say he has about at least five western series going and they are all very good, albeit not for the faint of heart. If you like sex scenes in your westerns, he has those too.
Reach him on Facebook or google Writing For The Brand(his website) Also, look for titles of his under the pen name Frank Leslie. And he also writes for Ralph Compton.