Explorers William Clark and his slave York were members of the Lewis and Clark Expedition (1803–1805), and William's older brother, General George Rogers Clark--conqueror of the old Northwest Territory and Revolutionary War hero. Both were born near what is now Ladysmith. In 1847, after being a member of the first graduating class of Virginia Military Institute (VMI), William "Little Billy" Mahone (1826–1895) of Southampton County began teaching at Rappahannock Academy in Caroline County. He was to become prominent as a railroad builder and developer, Confederate General, leader of Virginia's short-lived Readjuster Party, and a United States Senator. On May 10, 1863, Confederate Lieutenant General Thomas "Stonewall" Jackson died of complications from pneumonia at the Chandler plantation in Guinea Station (also known as Guiney's Station), in the unincorporated Caroline County community of Woodford.[4] The Chandler residence is now known as the "Jackson Shrine." During Union General Ulysses S. Grant's Overland Campaign, Confederate troops under General George E. Pickett fought Union troops near Milford. Just as the Civil War was concluding in April 1865, President Lincoln was assassinated in Washington, DC as part of a conspiracy to kill the leaders of the United States. As the conspirators fled, a manhunt was launched. After 10 days, in the wee hours of April 26, federal troops tracked down John Wilkes Booth, Lincoln's assassin, and fellow conspirator David E. Herold at Garrett's farm about 3 miles west of Port Royal. Booth was fatally shot during their capture by federal troops. Herold was returned to Washington, where he was executed by hanging with 3 co-conspirators on July 7, 1865.