James H. Timberlake was an American law enforcement officer, Civil War soldier, farmer and rancher who served as a deputy U.S. marshal for the Western District of Missouri. Timberlake is best known for being the chief enforcer and investigator against the JamesYounger Gang, beginning in the 1870s, which culminated in the death of the outlaw Jesse James on April 3, 1882, at the hands of Robert Ford.
James Timberlake was born on March 22, 1846 in Platte County, Missouri, to farmer John Timberlake and his wife Patsy Noland. Timberlake remained at home to help on his family farm until 1864, when he joined the cavalry division of the Army of Missouri, under the command of Colonel Alonzo W. Slayback in the American Civil War. Timberlake became a second lieutenant and participated in a number of engagements under the command of General Joseph O. Shelby. Following the surrender of the Confederate States of America, Timberlake accompanied Shelby and his one thousandplus men into Mexico to pledge allegiance to Emperor Maximilian I of Mexico. Maximilian declined this offer, but granted land to the troops. In December 1865, Timberlake abandoned his life in Mexico and returned to Missouri to continue farming and raising stock.
Source: Wikipedia