This chapel was built around 1881 by Madeline Vinton Dahlgren, widow of Admiral John A. Dahlgren, USN, inventor of the Dahlgren gun, the armament used by the USS Monitor against the CSS Virginia, formerly the steam frigate USS Merrimack.

Marker is at the intersection of Historic National Road (Alternate U.S. 40) and Dahlgren Road, on the right when traveling west on Historic National Road.

Courtesy hmdb.org

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