Many famous people are associated with these St. Mary County historic places including Alexander Porter, John Baldwin Sr., Murphy J. Foster, Bishop Leonidas Polk and Daniel Thompson.
Some of the country's most noteable architects helped create the St. Mary County places including Alexander Jackson Davis, Theo Kramer, Boy Scout Troop #1, Albert Heaton, John Baldwin Jr., M.L. Wilcox, Algernon Blair, Henry C. Wilson, Joshua B. Cary and John Hartman. Prominent architectural styles found in St. Mary Country are Greek Revival, Queen Anne and Stick/Eastlake.