Stick with wild west and this Sydney Pollack film from 1972.. Jeramiah Johnston. Robert Redford in title role. Will Geer, Allyn Ann McLerie, Stefan Gierasch, Charles Tyner and Delle Bolton fill out cast.
https://encrypted-tbn3.gstatic.com/i...QpP-tCJEZKa9Gk
Based loosely on a real mountain man of name John Johnson. He changed his name to that after deserting during the Mexican–American War after striking an officer, when he served aboard a fighting ship, having enlisted under a false age.
Rumors, legends, and campfire tales about Johnson abound. Perhaps chief among them is that in 1847, his wife, a member of the Flathead American Indian tribe, was killed by a young Crow brave and his fellow hunters, which prompted Johnson to embark on a vendetta against the tribe. According to historian Andrew Mehane Southerland, "He supposedly killed and scalped more than 300 Crow Indians and then devoured their livers" to avenge the death of his wife, and "As his reputation and collection of scalps grew, Johnson became an object of fear."
The story here is changed somewhat.

