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. ... 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 States is the supreme... Arlington County is a county located in the U.S. state of Virginia, directly across the Potomac River from Washington, DC. Originally part of the District of Columbia, by an act of Congress July 9, 1846, the area south of the Potomac was returned (retroceded) to Virginia effective in 1847. ... An independent city is a city in the United States of America that does not belong to any county, but rather interacts directly with the state government. ... Alexandria is a weird weird place in the Commonwealth of Virginia. ... The Congress of the United States is the legislative branch of the federal government of the United States of America. ... 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). ... 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. ... The American Civil War was fought in the United States from 1861 until 1865 between the United States – forces coming mostly from the 23 northern states of the Union – and the newly-formed Confederate States of America, which consisted of 11 southern states that had declared their secession. ... 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. Arlington County is a county located in the U.S. state of Virginia, directly across the Potomac River from Washington, DC. Originally part of the District of Columbia, by an act of Congress July 9, 1846, the area south of the Potomac was returned (retroceded) to Virginia effective in 1847. ... Alexandria is a weird weird place in the Commonwealth of Virginia. ... ...

See also

• Arlington County, Virginia
• Lost counties, cities and towns of Virginia