Alexandria County was part of the original 10-mile square created as the District of Columbia in 1791 pursuant to Article I, Section 17, of the United States Constitution. The portion of the District created from territory ceded by Virginia was termed Alexandria County of the District of Columbia. It included all of the present Arlington County, Virginia, plus part of what is now the independent city of Alexandria, Virginia. The area was retroceded to Virginia by an act of the United States Congress on July 9, 1846 following a referendum of its citizens, and was then known as Alexandria County, Virginia. ... 1791 was a common year starting on Saturday (see link for calendar). ... Article One of the United States Constitution establishes the legislative branch of government, Congress, which includes the House of Representatives and the Senate. ... Jump to: navigation, search Page I of the Constitution of the United States of America Page II of the United States Constitution Page III of the United States Constitution Page IV of the United States Constitution The Syng inkstand, with which the Constitution was signed The Constitution of the United... Location in the state of Virginia Formed 9 July 1846 Seat Arlington Area  - Total  - Water 67. ... An independent city is a city that does not form part of another local government entity. ... Jump to: navigation, search Old Town Alexandria, viewed from the west, as seen from the observation deck of the George Washington Masonic National Memorial. ... The Congress of the United States is the legislative branch of the federal government of the United States of America. ... Jump to: navigation, search July 9 is the 190th day of the year (191st in leap years) in the Gregorian Calendar, with 175 days remaining. ... 1846 was a common year starting on Thursday (see link for calendar). ...

In 1870, the independent City of Alexandria seceded from Alexandria County, and because of the confusion between the city and the county having the same name, a movement started to rename Alexandria County. In 1920, the name Arlington County was adopted, after Arlington House, the home of the American Civil War general Robert E. Lee, which stands on the grounds of what is now Arlington National Cemetery. 1870 was a common year starting on Saturday (see link for calendar). ... Jump to: navigation, search 1920 is a leap year starting on Thursday (link will take you to calendar) // Events January January 7 - Forces of Russian White admiral Kolchak surrender in Krasnoyarsk. ... Jump to: navigation, search The American Civil War (1861–1865) was fought in North America within the United States of America, between twenty-three mostly northern states of the Union and the Confederate States of America, a coalition of eleven southern states that declared their independence and claimed the right... Jump to: navigation, search Robert Edward Lee, as a U.S. Army Colonel before the war Robert Edward Lee (January 19, 1807 – October 12, 1870) was a career army officer and the most successful general of the Confederate forces during the American Civil War. ... Arlington Cemetery Arlington National Cemetery, in Arlington, Virginia, is an American military cemetery established during the American Civil War on the grounds of Robert E. Lees home. ...

Thus, Arlington County shares with a portion of the independent City of Alexandria the distinction of being once in Virginia, then ceded to the US government to form the District of Columbia, and later retroceded to Virginia. Location in the state of Virginia Formed 9 July 1846 Seat Arlington Area  - Total  - Water 67. ... Jump to: navigation, search Old Town Alexandria, viewed from the west, as seen from the observation deck of the George Washington Masonic National Memorial. ... ...

See also

• History of Washington, D.C.
• Arlington County, Virginia
• Lost counties, cities and towns of Virginia