as the Title suggests I need a bit of help putting together my new charcters life (also please ignore any spelling mistakes I never had a knack for it) as wiki can only tell so much but from what I have learned is that noone knows billys real name it could be William Henry McCarty, Henry Antrim and William H. Bonney, so I suppose I have to stick with Billy or if anyone knows his real name that would be great. He was known as an outlaw and folk hero and had a skill with guns, was cunning with words(speech) and was as agile as a cat(sneak). He might have been born in New York but no ones sure (as far as I know) were he was born. His father was named Patrick, Michael, William, or Edward McCarty. His mother was named Catherine McCarty but I can't find information on her madden name. on September 16, 1874, Catherine McCarty died of tubberculosis; she was buried in the Memory Lane Cemetery in Silver City. I can't find what happened to his dad but Billy was taken into a nearby family who ran a hotel. He was 14 when this happened and the family had him work for him to stay. The owner of the hotel was surprized he worked hard and didn't steal anything even his school teacher said "he was willy to help around the school house". I can't find anything that says why he went into lawlessness but it happened and was forced to be put into a boarding school. ] In April 1875, McCarty was arrested by Grant County Sheriff Harvey Whitehill, after McCarty stole some cheese. Later he was arrested for having clothing and firearms that a fellow boarder had stolen from a Chinese laundry owner. Two days after being arrested he escaped via a chimney in the jail house. Sheriff Whitehill said it was more due to need then want that cause Billy to take these items.
He become partners after this with John R. Mackie in the buissness of stealnig horses. In 1877, McCarty was involved in an altercation with the civilian blacksmith at Fort Grant, an Irish immigrant named Frank "Windy" Cahill, who took pleasure in bullying young McCarty. On August 17, Cahill reportedly attacked McCarty after a verbal exchange and threw him to the ground. Reliable accounts suggest McCarty retaliated by drawing his gun and shooting Cahill, who died the next day.Fearing the wrath of the law he fled and met up with cattle rustlers called the Jesse Evans Gang.But after a while he soon turned up at Heiskell Jones's house in Pecos Valley, New Mexico. According to this account, Apaches stole McCarty's horse, forcing him to walk many miles to the nearest settlement, which happened to be Jones's home. When he arrived, the young man was supposedly near death, but Mrs. Jones nursed him back to health. The Jones family developed a strong attachment to McCarty and gave him one of their horses. At some point in 1877, McCarty began to refer to himself as "William H. Bonney". So now I've got his early life but my fingers are starting to hurt so could someone tell me anything I've missed? I'm only doing the young Billy the Kid and I am ignoring everything that happened after this, not to be lazy but because I beileve this will make a more fun play through, tell me if you enjoyed it!.

I'd also like if you'd tell me any perk ideas besides cowboy to pick from your knowledge of billy the kid.

For a billy the kid build....
Max Agility
Have above average charisma.

You mentioned cowboy perk, also add hand-loader and rapid reload.
Without giving any spoilers away, the fallout wiki gives excellent information on hand loaded ammo.

For some Billy the Kid inspiration you could always watch Young Guns.

Thanks for your advice I'll be sure to do that.

I'd say more charisma, 8 I'd say. Survival too. Look at the film Young Guns, also shoot first, ask questions later.