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Mattapany-Sewall Archeological Site
U.S. National Register of Historic Places
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Nearest city	Lexington Park, Maryland
Built	1663
NRHP reference No.	85000164
Added to NRHP	February 1, 1985

Mattapany-Sewall Archeological Site is an archaeological site in St. Mary's County, Maryland. It is located at the Patuxent River Naval Air Station on a level terrace approximately 45' above sea level, less than 1000' south of the Patuxent River in an unused wooded/grassy tract. Documentary evidence identifies the site as Mattapany-Sewall, a manor established in 1663 and occupied from 1666 to 1684 by Charles Calvert, 3rd Baron Baltimore. It served as a governmental meeting place and colonial arsenal, and was the scene of the 1689 battle, known as the Protestant Revolution of 1689, in which Maryland's Proprietary government was overthrown.

It was placed on the National Register of Historic Places in 1985.

References

1. ^ "National Register Information System". National Register of Historic Places. National Park Service. April 15, 2008.
2. "Maryland Historical Trust". Mattapany-Sewall Archeological Site, St. Mary's County. Maryland Historical Trust. November 21, 2008.

External links

• Mattapany-Sewall Archeological Site, St. Mary's County, including photo in 1982, at Maryland Historical Trust
• Historic American Buildings Survey (HABS) No. MD-688, "Mattapany, Patuxent River vicinity, Millstone Landing vicinity, St. Mary's County, MD", 4 photos, supplemental material

38°17′8.5″N 76°25′41.1″W / 38.285694°N 76.428083°W / 38.285694; -76.428083

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• Archaeological sites on the National Register of Historic Places in Maryland
• Archaeological sites in St. Mary's County, Maryland
• Historic American Buildings Survey in Maryland
• Populated places in colonial Maryland
• National Register of Historic Places in St. Mary's County, Maryland
• Southern Maryland Registered Historic Place stubs