The Hatfields and McCoys. Mere mention of their names stirs up visions of a lawless family feud. It evokes gun-toting vigilantes hell-bent on defending their kinfolk, igniting bitter grudges that would span generations. However, many people familiar with these surnames may know little about the faded history of these two families and the legends they inspired. Who were the Hatfields and McCoys, and what was the origin of this vicious and violent clash between the families?