Utterly Mad

Name: William Masterson, AKA 'Third Son'
Age: 31
Height: 5'11"
Weight: 175 lbs
Appearance: Short cut brown hair, blue eyes, the beginnings of a beard. On his right forearm there's a tattoo reading 'Bandit Brotherhood'. Just below his right shoulder there appear to be self imposed burn scars, and scars on his right hand from an incident when he was 29.
Clothes: Cowboy hat, duster, plain white shirt, bandoleer(with pouches for rifle and shotgun shells, as well as spaces for sticks of dynamite.), Pair of old blue jeans, cowboy boots with spurs.
Background: The third brother born to a family of farmers, William grew up in his brothers shadows. His brothers always won the attention of the parents, while William worked hard on the farm. He was relieved when his two brothers joined the US Marshals and left the farm.
However he was still in the shadow of his brothers, with his parents always saying he should be more like them. At the age of sixteen William was in a saloon when someone popped off at him, calling him a coward.
William had had enough and pulled his pistol, killing the man with a single shot. Of course that started a shoot out, though the only one who had drawn a gun and made it out alive was William. He took off, taking one of the family horses and rushing off as fast as he could.
After only a handful of months William had joined a group of Bandits. They had taken him and made him family, though giving him the nick name 'Third Son'. He took the name as a badge of honor and fairly well demanded everyone who call him that or 'Third'.
It wasn't until he was 25 that he would run into his brothers. Nobody knows what went down, but a few days later a group of US Marshals found a pile of six revolvers, and a few days after that the two older brothers showed up to turn in their badges.
'Third' would then go on to start his own gang, and his two brothers settled back down on the farm. Third's gang would go on to rob trains and banks for the next four years until they settled to lie low for a while, with Third going back to the farm for a while.