Part One of this landmark work is a personal history of Prince George's County, based on reminiscences, and was the inspiration for the important section following. The genealogical section designated Part Two deals with the following county families, many of them allied in one generation or another: Addison, Beall, Berry, Bowling, Brooke, Calvert, Clagett, Clark, Clarkson, Clements, Contee, Darnall, Digges, Dulany, Dyer, Fenwick, Graham, Gwynn, Hall, Hill, Hilleary, Keene, Lee, Lowe, Magruder, Marbury, Murdock, Plummer, Rozer, Sewall, Sprigg, Waring, and Young. The genealogies are uncommonly detailed and refer in total to approximately 12,000 individuals, encompassing a time period stretching from the late eighteenth century through the middle of the twentieth.