The exhibition “Founding Fortunes: The Estate Sale of Martha Washington,” opening on Tuesday, Feb. 10, and Executive Director Mary-Frances Wain, who started this month. Martha Parke Custis Peter, who with her husband Thomas Peter acquired the Georgetown property in 1805, was Martha Washington’s granddaughter. On five-and-a-half acres at 1644 31st St. NW, Tudor Place Historic House & Garden opened to the public in 1988. “This is a new thing for Tudor Place,” DeHart said. will be on March 27 and 28 and the Tudor Place Garden Party on May 20.