Question: When the city was the capital of Georgia where John Milledge Academy campus is located on?

Context paragraphs:
Baldwin High School (Georgia): Baldwin High School (BHS) is located at 155 Highway 49 West in Milledgeville, Georgia, United States.  The original building opened in 1988 as a combination of Milledgeville's two former high schools, Boddie High School and the original Baldwin High School.  New additions since 2003 include a classroom wing, a JROTC building, and a fine arts wing, with more additions under construction.  Baldwin is the only public high school in Baldwin County, and the largest of the three total high schools.  The other two are private schools: John Milledge Academy and Georgia Military College.

Lantz Hall: Lantz Hall is a historic building located at Massanutten Military Academy, Woodstock, Shenandoah County, Virginia.  It was built in 1907-1909, and is a 3 1/2-story, seven bay by three bay, brick faced frame building in the Late Gothic Revival style.  It features a projecting Gothic tower pavilion and three-bay pointed-arched porch.  In 1926, a three-story, seven-by-three bay, gable-roofed ell was constructed to the rear.  The building houses a dormitory, classrooms, a gymnasium/firing range, and an auditorium.  It was the second building built on the Massanutten Military Academy campus.

Milledgeville, Georgia: Milledgeville is a city in and the county seat of Baldwin County in the U.S. state of Georgia.  It is northeast of Macon and bordered on the east by the Oconee River.  The rapid current of the river here made this an attractive location to build a city.  It was the capital of Georgia from 1804 to 1868, notably during the American Civil War.  Milledgeville was preceded as the capital city by Louisville and was succeeded by Atlanta, the current capital.  Today U.S. Highway 441 connects Milledgeville to Madison, Athens, and Dublin.

Tripoli Monument (sculpture): The Tripoli Monument is the oldest military monument in the United States.  It honors heroes of the United States Navy from the First Barbary War (1801-1805): Master Commandant Richard Somers, Lieutenant James Caldwell, James Decatur (brother of Capt.Stephen Decatur), Henry Wadsworth, Joseph Israel, and John Dorsey.  It was carved in Livorno, Italy in 1806 and brought to the United States on board the famous 1797 frigate USS "Constitution" ("Old Ironsides").  From its original installation in the Washington Navy Yard at the new national capital of Washington, D.C. in 1808, it was later moved to the west front terrace of the United States Capitol facing the National Mall in 1831, and finally to the United States Naval Academy campus in Annapolis, Maryland in 1860.

John Milledge: John Milledge (1757February 9, 1818) was an American politician.  He fought in the American Revolution and later served as United States Representative, 26th Governor of Georgia, and United States Senator.  Milledge was a founder of Athens, Georgia, and the University of Georgia.

Elmwood Historic District–East: Elmwood Historic District–East is a national historic district located at Buffalo, Erie County, New York.  The district encompasses 2,405 contributing buildings, 31 contributing structures, and 14 contributing objects in the Elmwood Village neighborhood of Buffalo.  It is bounded on the north by Delaware Park, Forest Lawn Cemetery, and the former Buffalo State Asylum, on the south by the Allentown Historic District, and on the west by the Elmwood Historic District–West.  This predominantly residential district developed between about 1867 and 1965, and includes notable examples of Queen Anne, Shingle Style, Colonial Revival, Tudor Revival, and American Craftsman style architecture.  The district contains one of the most intact collections of built resources from turn of the 20th century in the city of Buffalo and western New York State.  Located in the district are 17 previously listed contributing resources including the Buffalo Seminary, Garret Club, James and Fanny How House, Edgar W. Howell House, Edwin M. and Emily S. Johnston House, Col. William Kelly House, Lafayette Avenue Presbyterian Church, Parke Apartments, and the Unitarian Universalist Church of Buffalo.  Other notable building include the Frank Lloyd Wright designed William R. Heath House (1904-1905), Herbert H. Hewitt House (c. 1898), School 56 (1910-1911), the Harlow House (c. 1892), A. Conger Goodyear house (c. 1908), Alexander Main Curtiss House (now the Ronald McDonald House, 1895), Nardin Academy campus (c. 1914), and Coatsworth House (1897).

John O. Merrill: John Ogden Merrill Sr. (10 August 1896 – 13 June 1975) was an American architect and structural engineer.  He was chiefly responsible for the design and construction of the United States Air Force Academy campus and for the development of Oak Ridge, Tennessee where the atomic bomb was developed.  He was a founding partner of the international architectural firm of Skidmore, Owings & Merrill.

J. T. Wall: J. T. Wall(born September 12, 1979) is an American football fullback.  Wall attended John Milledge Academy in Milledgeville, GA, where he was a four-year starter at linebacker and fullback.  After high school, he moved on to Southwest Baptist University in Bolivar, MO prior to transferring to Georgia.  Wall was taken in the seventh round of the NFL draft by the Pittsburgh Steelers.  After a short lived professional career, he now is the Head Football Coach at his old high school John Milledge Academy and has led them to two straight Region Championship titles (2012 and 2013) and a state AAA Championship in 2016.

Summerville (Augusta, Georgia): Summerville, (commonly referred to locally as "The Hill"), is a large, affluent residential area and historic district located northwest of downtown Augusta, Georgia.  The district is site of the historic homes of John Milledge, George Walton, and Thomas Cumming.

John Milledge Academy: John Milledge Academy, named after Georgia Governor John Milledge, is a private school located on a 40-acre campus on Log Cabin Road in Milledgeville, Georgia, United States.  It is coed and nonsectarian, serving students in grades PK-12.  Founded in 1971, John Milledge Academy is accredited by the Georgia Accrediting Commission, and is affiliated with Georgia Independent School Association (GISA).  A summary of the school's mission statement is: John Milledge Academy's purpose is to provide a challenging college-preparatory education for students, and to provide Central Georgia students with an affordable education in a stimulating atmosphere.

Supporting paragraphs: John Milledge Academy Milledgeville, Georgia
Answer: 1804 to 1868