National Harbor in Fort Washington in Prince George's County, Maryland — The American Northeast (Mid-Atlantic)
Addison Family at National Harbor

Photographed by Devry Becker Jones (CC0), January 1, 2020
1. Addison Family at National Harbor Marker
Bird's Eye View of Alexandria, 1863
Ships that docked at Alexandria's bustling wharves carried tobacco all over the world and brought fine goods from Europe for wealthy Maryland planters.
Addison Family at National Harbor
Colonel John Addison, who emigrated from England to Maryland in 1667, acquired several thousand acres of land along the Potomac River. Addison acquired the tract of land known as St. Elizabeth's in 1692 and built an earthfast structure on this site.
After John Addison's death in 1705 or 1706, his son Thomas Addison inherited his property and began construction of substantial brick house that was completed in 1710 (18PR175). At the time of its construction, the Oxon Hill Manor plantation was one of the most luxurious homes in the region. The house was home to five generations of the Addison family. Walter Dulaney (sometimes spelled Dulany) Addison, the great-grandson of Thomas Addison, inherited Oxon Hill at the age of five. He later served as a minister of the Episcopal Church and lived a simple and pious lifestyle. In 1810, the Reverent Walter Addison sold Oxon Hill Manner and 1,300 adjoining acres to Zachariah Berry. The manor house remained one of the finest homes along the Potomac River until it burned in 1895.
Prominent Addison figures include Colonel John Addison (1634-1705/6) who was a member of the Council of Maryland (1692-93) and a founder of St. John's Episcopal Church, Broad Creek; Colonel Thomas Addison (1679-1727) first county surveyor for Prince George's County (1696) and judge (1712); and Rev. Walter Dulaney Addison (1796-1848) first ordained Episcopal priest in Prince George's County and founder and rector of St. John's Church in Georgetown. Rev. Addison was a staunch opponent of dueling and slavery.
The Addisons were prominent landowners and merchants throughout Prince George's County and have been involved in all aspects of the community. Other prominent properties in Prince George's County owned or associated with the Addison family include: Salubria Plantation (PG:80-2); St. John's Episcopal Church, Broad Creek (PG:80-7); and St. Barnabas Episcopal Church (PG79-57). Many heirs of the Addison family still reside in Prince George's County.
Oxon Hill Manor House Foundations
Archaeological excavations

Photographed by Devry Becker Jones (CC0), January 1, 2020
2. Addison Family at National Harbor Marker
Current location of the Addison family plot at St. John's Church
On October 26, 2017 the Addison family cemetery originally located on Oxon Hill Manor was relocated to St. John's Church, Broad Creek (PG:80-7).
Erected by National Harbor.
Topics. This historical marker is listed in these topic lists: Anthropology & Archaeology • Cemeteries & Burial Sites • Colonial Era • Settlements & Settlers. A significant historical date for this entry is October 26, 2017.
Location. 38° 47.821′ N, 77° 0.222′ W. Marker is in Fort Washington, Maryland, in Prince George's County. It is in the National Harbor. It is on MGM National Avenue just west of Oxon Hill Road, on the right when traveling east. Touch for map. Marker is in this post office area: Oxon Hill MD 20745, United States of America. Touch for directions.
Regionally, this marker is in the Washington Metropolitan Area. It is also in the American South, specifically in the Upper South, and in the Mid-Atlantic. Globally, it is in the North Atlantic Region, North America,
the Western Hemisphere, the Western World, and the Anglosphere. Historically, it finds itself in what was once one of the original Thirteen Colonies and also the Antebellum South.
Other nearby markers. At least 8 other markers are within walking distance of this marker: Free African Americans of Oxon Hill (here, next to this marker); John Hanson (here, next to this marker); Welcome to Salubria (approx. 0.2 miles away); Veterans Memorial (approx. 0.2 miles away); a different marker also named John Hanson (approx. Ό mile away); You Are Standing at Historic Salubria (approx. Ό mile away); Salubria Changed the Future of the Potomac Valley (approx. Ό mile away); Front Door to Maryland History (approx. 0.3 miles away). Touch for a list and map of all markers in Fort Washington.
Another marker is no longer nearby. Judah and Resistance (was approx. Ό mile away but has been confirmed missing).

Photographed by Allen C. Browne, January 2, 2020
6. Oxon Hill Fire
Destruction of an Historic Mansion in Prince Georges County.
(Special Dispatch to the Baltimore San.)
Alexandria, Va. Feb. 6. — Another one of Maryland's historic mansions has been destroyed. The spacious dwelling-house on Oxon Hill overlooking the Potomac in Prince Georges County Opposite Alexandria, caught fire In last night and was left a wreck by the flames at daybreak this morning.
This mansion has long been one of the landmarks of the neighborhood of Washington. It was built about 1750 by Rev. Addison, an Oxford man, and with the mansions of Mt. Vernon, Belvoir and the Carlisle House on the Virginia side of the Potomac River, made up the noted mansions of the neighborhood in colonial days. The Oxon Hill estate gave its name to Oxon River one of the streams of Prince Georges county. The mansion passed from the Addison family into the hands of the late Thomas Berry, and had lately been sold.
Baltimore Sun article on the fire that destroyed Oxon Hill Manor in 1895.
Credits. This page was last revised on July 8, 2025. It was originally submitted on January 1, 2020, by Devry Becker Jones of Washington, District of Columbia. This page has been viewed 2,526 times since then and 259 times this year. Photos: 1, 2. submitted on January 1, 2020, by Devry Becker Jones of Washington, District of Columbia. 3, 4, 5. submitted on January 6, 2020, by Allen C. Browne of Silver Spring, Maryland. 6, 7, 8. submitted on January 9, 2020, by Allen C. Browne of Silver Spring, Maryland.




