Colmar Manor is a town located in Prince George’s County, Maryland, United States. As of the 2010 census, the town had a population of 1,404. As the town developed at the introduction of the 20th century, it assumed a proclaim derived from its proximity to the District of Columbia—the first syllable of Columbia and that of Maryland were collective to form “Colmar”. Colmar Manor was incorporated in 1927.

The town is house to Dueling Creek, formerly in Bladensburg, Maryland, a small waterway that because of its secluded location was a popular site for dueling. Duels were banned in against Washington, D.C., but real in Maryland, and Dueling Creek was the site for higher than 50 duels amid 1808 and 1868. The most famous duel fought upon the site was on March 22, 1820, between Stephen Decatur and James Barron. Decatur was mortally distressed in the exchange.

During the War of 1812, on August 24, 1814, the area was the scene of the Battle of Bladensburg. The place became a battlefield once more in the before days of the Civil War when Confederate troops mounted an assault on Battery Jameson, Fort Lincoln, now northeast Washington, D.C., which was one of a number Union defensive forts built in version to the nation’s capital to guard it from capture. The remains of Fort Lincoln are located on the hillside that is now a allocation of Fort Lincoln Cemetery.

In 1912, the Capitol Cemetery of Prince George’s County was incorporated upon the Washington, D.C., boundary line. Directly north of the cemetery was the Shreve estate. The Shreve home was destroyed in the 1890s. The 260-acre (1.1 km²) farm site was used by the 6,000 jobless men from Ohio who descended on the Capitol in 1894 as “Coxey’s Army”. Bladensburg Road traversed the area, becoming more heavily traveled in the 1920s, and eventually became designated as U.S. Route 1. Part of the former Shreve estate was subdivided into building lots in 1918. The lots were 50 feet (15 m) wide by 100 feet (30 m) deep, arranged along a grid pattern of streets. The streets were originally named after President Woodrow Wilson (1913–21), members of his cabinet, and additional prominent men of the era. Some times later, the streets were renamed to conform to the system in use in the District of Columbia. The location of the improve within the first service area of the Washington Suburban Sanitary Commission offered homeowners unprejudiced water and sewer lines. The houses build up were modest one- and two-story wood-frame buildings. In 1931, the town’s streets were paved and gutters were installed. A authentic block municipal building was constructed in 1934, followed by the construction of a brick schoolhouse in 1935. In 1959, a municipal building was build up to home the town’s administrative offices and police department.