Owned by the Prince Georges County Department of Parks and Recreation, the Marietta House was the residence of Justice Gabriel Duvall.

The State Archives serves as the central depository for government records of permanent value. Its holdings date from Maryland's founding in 1634, and include colonial and state executive, legislative, and judicial records; county probate, land, and court records; church records; business records; state publications and reports; and special collections of private papers, maps, photographs, and newspapers.State of Maryland Archives

The goal of the DUVALL Surname Project is to distinguish between DUVALL ancestral lines, worldwide. Any reasonable spelling variant is included (please feel free to suggest a variant you feel I have missed). Also please note that, to participate meaningfully, you will need to share your ancestry by populating your family tree back to your earliest known DUVALL in the myFamilyTree section of your account.