Click here to view the Hatfield and McCoy Family Tree America's most notorious family feud began in 1865 with the murder of a Harmon McCoy, a Union soldier, by a Confederate Hatfield relative. But Southern grudges run long and deep. More than a decade later tempers flared over stolen hogs. This accusation triggered years of bloody violence and retribution that led to a tragic Romeo-and-Juliet interlude, a Supreme Court ruling, and Kentucky's last public hanging. The final feud trial took place in 1898, but the rivalry didn't end there. Its legend continues to have an enormous impact on the popular imagination and the people of the region. Here is a fascinating new look at the infamous story of the Hatfields and the McCoys.