Grahame House
historic house in Maryland, United States

Grahame House, Graham House, Mansion House, Graeme House, or Patuxent Manor, is a historic home located at Lower Marlboro, Calvert County, Maryland. It is an 18th-century original 1+1⁄2-story brick shell laid in Flemish bond with a steeply pitched gable roof. Later alterations have included the purchase and removal of the fine paneling throughout the house to the Winterthur Museum, Garden, and Library.
Charles Grahame, for whom the home is named, was associated with Frederick Calvert, 6th Baron Baltimore, through Grahame's brother, David Grahame (who married Calvert's cousin, Charlotte Hyde), and with Thomas Johnson, the first elected governor of the State of Maryland, through Grahame's son (who married Johnson's daughter).
It was listed on the National Register of Historic Places in 1972.
References
External links
Grahame House, Calvert County, including undated photo, at Maryland Historical Trust
Historic American Buildings Survey (HABS) No.
“Grahame House” enters the record as historic house in Maryland, United States. Crown Archives preserves that source wording while asking what Grahame, House and historic can confirm, complicate or overturn.
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Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Sep 5, 2026. The linked authority identifier is Q5593420. Authority coordinates are 38.657, -76.678. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1972.
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This entry incorporates text from “Grahame House” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.