I've put the billy can on the camp fire and cooked up a Random Cowboy Name Generator which is now up on my website – just follow the link and click the button to instantly create one of over a quarter of a million 3-part Cowboy names for your next gang!
http://www.madaxeman.com/games/dead_mans_hand_name_generator.php (There are a few slightly out-there ones hidden in the mix as well – of course..)