Margaret (Brown) Stone is the daughter of Dr. Gustavus Brown (1689-1762) immigrated from Scotland in 1708 and established a successful medical practice in the Nanjemoy area of Charles County, Maryland. Her mother was his second wife, Margaret (Black) Brown.
Margaret married Thomas Stone, signer of the Declaration of Independence. Her dowry may have helped Thomas purchase a 322 acre plantation, which he named Haberdeventure, “dwelling place in the winds.”
The Stone family lived at Haberdeventure from 1770 until 1936, a total of six generations. When a fire destroyed much of the main house in 1977, the house had been continuously occupied for over 200 years. In addition to the house, the park contains outbuildings and the family cemetery. The house is part of the National Historic Places and photographs of it may be seen here: https://www.nps.gov/thst/index.htm
Margaret visited Thomas in Philadelphia, which was in the midst of a smallpox epidemic. She was inoculated for the disease, but an adverse reaction to the treatment made her ill. Her health continued to decline for the rest of her life. Margaret predeceased her husband by just four months. 
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