He set enduring precedents for the office of president, including the title 'President of the United States', and his Farewell Address is widely regarded as a pre-eminent statement on republicanism. In 1751 Washington made his only trip abroad when he accompanied Lawrence to Barbados, hoping the climate would cure his brother's tuberculosis. Washington contracted smallpox during that trip, which immunized him but left his face slightly scarred. Lawrence died in 1752, and Washington leased Mount Vernon from his widow; he inherited it outright after her death in 1761. Washington contracted smallpox during that trip, which immunized him but left his face slightly scarred. Lawrence died in 1752, and Washington leased Mount Vernon from his widow; he inherited it outright after her death in 1761. Washington was buried in the old Washington family vault at Mount Vernon, situated on a grassy slope overspread with willow, juniper, cypress, and chestnut trees.