S3·E23 Tall in the Saddle

When Willie finds a wooden grave marker in the cemetery with Jack Craddock's name on it, Jack disregards it as a prank. Distressed that Willie is leaving for Paris with his father, he decides to accompany them part of the way, but on the trail, they are apprehended by the brother of an outlaw Jack had killed, intending to kill the marshal on the same spot where the brother was buried.