Liver Eating Johnson was a real life mountain man during the 1900's, and also the inspiration for the 1972 movie Jeremiah Johnson starring Robert Redford.
German wikipedia: John Jeremiah Johnson – Wikipedia (https://de.wikipedia.org/wiki/John_Jeremiah_Johnson)
English wikipedia: Liver-Eating Johnson - Wikipedia (https://en.wikipedia.org/wiki/Liver-Eating_Johnson)
His original Wade & Butcher knife, now in a US museum:
and how his Wade & Butcher knife originally looked:
