<|im_start|>user
From the following description of the Hatfield-McCoy feud, identify the person condidered the leader of the Hatfields.

Context:
The Hatfield–McCoy feud, also described by journalists as the Hatfield–McCoy conflict, involved two rural American families of the West Virginia–Kentucky area along the Tug Fork of the Big Sandy River in the years 1863–1891. The Hatfields of West Virginia were led by William Anderson "Devil Anse" Hatfield, while the McCoys of Kentucky were under the leadership of Randolph "Ole Ran'l" McCoy. Those involved in the feud were descended from Joseph Hatfield and William McCoy (born c. 1750). The feud has entered the American folklore lexicon as a metonym for any bitterly feuding rival parties.<|im_end|>
<|im_start|>assistant
William Anderson Hatfield, also known as "Devil Anse", was considered the leader of the Hatfield clan.<|im_end|>
