Tom Mudd, left, great-grandson of Dr. Samuel A. Mudd, speaks to other Mudd descendants Friday, July 24, 2015, at Fort Jefferson in Dry Tortugas National Park, Fla., in one of several cells where Mudd was imprisoned after splinting the broken leg of President Abraham Lincoln’s assassin, John Wilkes Booth. About 80 Mudd descendants made the pilgrimage to the isolated former military prison that lies 68 miles west of Key West, Fla., in the Gulf of Mexico. Samuel Mudd arrived July 24, 1865, and although he was pardoned and released some four years later, family efforts to have his conviction expunged have failed. FOR EDITORIAL USE ONLY (Andy Newman/Florida Keys News Bureau/HO)