If a man is insulted and means to be revenged, he will bare his arm and cut a cross in it with his knife, called a “vengeance mark.”
Mountains of North Carolina.

If a man is insulted and means to be revenged, he will bare his arm and cut a cross in it with his knife, called a “vengeance mark.”
Source: Current Superstitions (1896), entry 1404.
Fanny D. Bergen, editor.
Modern normalized navigation; the historical attribution above remains unchanged.