Death Rides a Horse - 1967

Death Rides a Horse (Italian: Da uomo a uomo, lit. 'From man to man') is a 1967 Italian spaghetti Western directed by Giulio Petroni, written by Luciano Vincenzoni and starring Lee Van Cleef and John Phillip Law.
Bill, a boy whose father was killed and mother and sister were gang-raped and murdered in front of him by four robbers, sets out 15 years later to exact revenge, having used the time to become an expert marksman with a revolver. Each of the outlaws bears a characteristic which Bill memorized while watching his family slaughtered and his house set on fire: The first has a tattoo of four aces on his chest, the second a scar, the third one a distinctive earring and the fourth (who was the one who saved young Bill from the burning house) wears a necklace bearing a skull; while he saw the face of the fifth, he never saw the face of the man who saved him from the fire.