Background
Eleanor Calvert was born in 1758 at the Calvert family"s Mount Airy plantation near Upper Marlboro in Prince George"s County, Maryland. Eleanor was the second eldest daughter of Benedict Swingate Calvert, son of Charles Calvert, 5th Baron Baltimore, and his wife Elizabeth Calvert Butler. Eleanor married John Parke Custis, son of the late Daniel Parke Custis and Martha Dandridge Custis Washington (and stepson of George Washington), on February 3, 1774 at Mount Airy.