The townsite was established near a water source known as Ellicot's Spring. Washington became the second territorial
capital, when the seat of the
Mississippi Territory General Assembly was moved from
Natchez to Washington on February 1, 1802.
Fort Dearborn, located at Washington, was for a time the largest military installation then extant in the United States, with more than 2,000 soldiers stationed there, including such notables as Brigadier General
Leonard Covington and future General
Winfield Scott. It was established in 1802 to protect the newly relocated capital of the
Mississippi Territory. British traveler
Fortescue Cumming visited in 1808 at which time he "counted thirty scattering houses, including one store, one apothecary's shop, three taverns, and a gaol." Two enslaved men were convicted of the murder of Thomas H. Green, son of territorial treasurer
Abner Green, and executed April 23, 1810, at Washington, Mississippi Territory. The community, and nearby
Woodville, both made public gestures in support of the
Monroe administration during the lead-up to what became the
War of 1812. As of 1813, celebrations might be held at DeFrance's Hotel. According to a history of Methodism in Mississippi, the church at Washington "became the most popular preaching place in all the country. The congregations were large and appreciative, many of whom, from time to time, were sweetly drawn into the gospel net...The social meetings of the Church were highly appreciated and well attended...Washington was now in the zenith of its glory and prosperity." Surnames of white families that lived in or near Washington were Bowie, Calvit, Chew, Covington, Dangerfield, Freeland, Grayson, Magruder, Wilkinson, Winston, and Wailes. According to a 1906 survey of "lost villages of Mississippi": The Mississippi constitution convention of 1817 met in Washington at the Methodist Meeting House (which was purchased by
Jefferson College in 1830). Mississippi's first constitution was written and adopted here, and the state's first legislature convened here in 1817. The preliminary trial of U.S. vice-president
Aaron Burr occurred under some
nearby oak trees. After Mississippi was admitted to the union in 1817, the legislature met once in Washington, and afterward in Natchez. In the late 1810s there was a
yellow fever outbreak in the town, which had previously been considered a "salubrious climate" compared to Natchez, and the disease killed "a number of the best citizens, so that people were restrained from fixing their family residences there." The Natchez Trace fell out of use as a U.S. post road by 1824, consequent to the development of the steamboat, and "from this date (1825–26) a variety of natural causes contributed to its depopulation until for a score of years it has been nothing more than a scattered village." By the 1840s the "old village" already represented a "forgotten society." ==Geography==