Washington first stayed at the Dewint House from August 8–24, 1780, while inspecting a redoubt on the Hudson River. Washington returned from September 28 to October 7, 1780, for the nearby trial of BritishspyMajor John André. Washington signed the execution warrant in the house and Andre was subsequently hanged. Andre had been captured in Tarrytown after plotting with Benedict Arnold to surrender West Point to the British. André was held in the Old '76 House in Tappan, a tavern which is now a restaurant. Washington provided meals from his table at the DeWint House to André at the '76 House. A stone on André Hill Road at Gallows Hill marks the site of André's hanging. Washington and his key staff headquartered at the DeWint House from May 4–8, 1783, while negotiating the final withdrawal of British troops from New York City with British GeneralSir Guy Carleton. It was said to have been a friendly conference combined with an elegant dinner prepared by Samuel Fraunces, owner of Fraunces Tavern in New York City, who came up to prepare the dinner for Washington and his guest. From November 11–14, 1783, a terrible snowstorm forced Washington to seek shelter in the DeWint House on his trip to visit West Point and later New York City, where he tendered his resignation.
Grounds and renovation
The property was in disrepair when it was acquired by the Grand Lodge of Free and Accepted Masons of the State of New York in 1932. The site was declared a National Historic Landmark and was added to the National Register of Historic Places in 1966. The DeWint House, along with Stony Point Battlefield in Stony Point and the Blauvelt House in New City, are the only places in Rockland County designated as New York StatePaths through History sites. The site has undergone extensive restoration and upgrading. The house's two first-floor rooms have been restored and furnished to reflect the period of Washington's occupancy. A fully functioning replica kitchen, as Washington might have known it while he was a guest of the DeWints, was completed in 1996. The grounds include a 19th-century carriage house that contains displays of artifacts uncovered at the site during archaeological digs, as wells as items related to Washington, André and Arnold, and the Masons. A large mill stone from a grist mill in nearby Ramapo is displayed on the grounds, and at the rear of the house stand seven small grave markers each bearing one to three initials, which came from a nearby property. It is believed these markers came from a burial ground for slaves on that property. The house and grounds are open to the public.