Comanche Indians have trapped the evil of their land in a monster made up of a mixture of other animals .  The Comanche have placed a protective spear in the ground to contain the evil .  A young boy pulls the spear from the ground while pocketing a rabbit foot talisman .  He starts to play with the spear .  A Comanche catches the boy , and startled , he runs away with the rabbit's foot .  The Native American places the spear back , realizing too late that the rabbits foot is now gone .  After that , white men come and start drilling for oil .  Skip to current time , a divorced father , Mance Cashen , moves to the area with his new wife , baby , and his son from his first marriage , Willy ( played by ( ( Chris Miller , who is visiting .  Willy notices something peculiar in the house and tries to warn his father and step-mother .  They do not believe him .  Willy is attacked while on a tire swing over a small water hole .  The creature grabs his foot and Willy struggles , eventually getting away .  He eventually befriends the local drunk , T. C. van Houten .  A nice old man with some bad memories who knows something about the evil near the oil well and was in a situation similar to Willy's .  In the meantime a Comanche Indian , Chief Sam John , comes to warn Mance of the evil and the need to keep it contained .  Sam John informs Mance the evil was originally intended to stop the white man , but it is indiscriminate in whom it kills instead .  Mance will have none of it .  Willy eventually takes a spear he finds on his property to Sam John and tries to find out what is going on . 
What is the name of the old man with whom Willy became friends?
John