The graveyard at Monticello began with an agreement between two young men, Thomas Jefferson and Dabney Carr, who were schoolmates and friends, that they would be buried under a great oak that stood there. Carr, who married Jefferson's sister, died in 1773, and his was the first grave on the site, which Jefferson laid out as a family burying ground. Jefferson was buried there in 1826. The present monument is not the original one designed by Jefferson, but a larger one erected by the United States in 1883. Its base covers the graves of Jefferson, his wife, his two daughters, and Governor Thomas Mann Randolph, his son-in-law. The graveyard remains the property of Jefferson's descendants and continues to be a family burying ground.