Final answer:
The lawyer involved in the infamous Hatfield-McCoy feud, who worked to have the Hatfields extradited to Kentucky, was Perry Cline.
Step-by-step explanation:
The lawyer associated with the Randolph McCoy feud, who sought to have the Hatfields arrested and brought to Kentucky for trial, was Perry Cline. This feud, known as the Hatfield-McCoy feud, was a notorious conflict between the Hatfield family of West Virginia and the McCoy family of Kentucky. The feud is a symbol of American folklore and highlights the intense and sometimes violent rivalries that can form between families or clans. Perry Cline, a McCoy relative by marriage, used his legal expertise to pursue justice against the Hatfields, which escalated the conflict to involve state authorities and even the United States Supreme Court.