John "Liver-Eating" Johnson born John Jeremiah Johnston (c.1824 – 1900). Mountain man of the American Old West.
A film based on Johnson's life, called "Jeremiah Johnson", was released
in 1972. It was directed by Sydney Pollack and starred Robert Redford
as Johnson (although the liver eating was left out).
"A seriously big guy, six feet tall, 250 pounds, with flaming red hair and beard..." https://everything2.com/title/Jeremiah+Johnson