The actor's name is Jared Padalecki.
The werewolf that Sam Winchester slept with is named Madison.
Her name is Madison
Sam Winchester is played by Jared Padalecki.
Jared Padalecki
Sam and Dean's father is named John Winchester.
Mary Winchester.
Their last names are Winchester.
There is no relation between them and the Winchester rifle. Throughout the show, when they say their full name, some people or themselves respond with 'like the gun'.
Jared Padalecki plays Sam Winchester.
Sam Winchester was born on May 2, 1983 so he would be 30 years old today.
In the TV series "Supernatural" the character Sam Winchester is not depicted as a fallen angel, but rather, as a person with a very unusual destiny.
Jared Padalecki