Albert Ferdinand Bellingrath (1867-1944) was born to Albert Bellingrath (1838-1903) and Mary George McMillan (1843-1923) in Atlanta, Georgia. He married Lillie Ruth Council (1874-1962) in 1896, and the couple had four children: George Council Bellingrath (1897-1977), Mary Alberta Craig (1901-1989), Lillie Ruth Pruitt (1907-2005), and Caroline Anne Bellingrath (1911-1937). Albert Bellingrath worked as a plumber for his own company, Bellingrath Plumbing Company.

Mary George McMilian was born to William Henry McMillan (1810-1901) and his second wife, Mary Caroline Muller Blue (1806-1860) in Quincy, Florida. They had six other children, including Ferdinand Dallas McMillan (1844-1920). Ferdinand Dallas McMillan enlisted with Company B of the Seventh Georgia Regiment in the Army of Northern Virginia in May 1861 as a drummer boy. He was subsequently elected 3rd Sergeant in May 1862 and was mustered out of service in July 1862 for being underage. McMillan also worked for Hunnicutt and Bellingrath Company, located in Atlanta, Georgia, which was under contract by the Confederate States of America during the Civil War to provide nitre and alcohol to the military. McMillan designed and built Fort Peace, also known as The Castle, located at 87 Fifteenth Street, in Atlanta, Georgia.