Austin is a very good name. Other suggestions if you are into the Western, Cowboy, kind of thing.
Tex (Tex Ritter or short for Texas)
Bronco
Rangler
Ranger (Lone Ranger)
Blocker (Dan Blocker)
Landry (Tom Landry of the Cowboys)
Rowel (The star-shaped spinning wheel on a spur)
Wyatt (Wyatt Earp)
Trigger (Roy Rogers Horse)
Maverick
I think that all I got for now
