Portland Manor, Colonial mansion in Lothian, United States.
Portland Manor is a two-story colonial residence built with timber frame construction and a center-passage plan, featuring multiple wings spread across the property. The layout reflects how families organized daily life in the 18th century, with distinct spaces for different household functions.
The house was established in 1754 by Jerome White, who served as Surveyor-General of Maryland, on property granted for his official work. The estate later passed to the Darnall family, who maintained it through the following generations.
The property earned recognition on the National Register of Historic Places in 1996 for its representation of 18th-century architectural developments.
The main floor contains living and dining areas along with a kitchen, while the upper level houses four bedrooms. The surrounding grounds offer room to walk around the various parts of the structure.
A tree-ring analysis of the wooden beams in 1997 confirmed the exact year of construction and helped narrow down the house's history. This scientific study also resulted in recognition for the restoration work done on the property.
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