Played by Robin Weigert
Born Martha Jane Cannary, Calamity Jane is nearly as famous as Hickok was and is known to be as tough as any man in the West. Raised in the mining camps of Wyoming, she is a legendary horsewoman and crack shot, and is rumored to have been an Army scout for Custer.
A notorious boozer and brawler—and one of the most foul-mouthed frontierspeople of either sex--Jane is loyal and absolutely dedicated to Wild Bill. She travels across the West with him, and likes to tell people that they are husband and wife.