Dr. George Marlow Everhart (1826-1891) was born in Loudoun County, Virginia, to William and Susan Everhart. His brother was Elijah Danner Everhart (1828-1863), a graduate from Bellevue Hospital Medical College. George graduated from Emory-Henry College in Emory, Virginia, in 1852; published "Josephine and Other Poems" in 1858; was a volunteer medic during the Civil War; and preached a sermon to the Confederate Cabinet in 1865. He married Cornelia Adelaide Banner. Cornelia Banner had a sister, Sarah Ann Banner (1834-1862).

George and Cornelia had two children: Adelaide Everhart (1865-1958), an artist whose paintings hung in the Georgia capitol, and Lay Hampton Everhart (1869-1945), a lieutenant in the United States Navy who fought in the Battle of Manila Bay during the Spanish-American War (1898). Lay married Margaret Hogg (1887-1967), and they had two children: George Marlow Everhart (1917-2004) and Margaret Everhart (1918-2001). Margaret Hogg had a sister, Chris Hogg (b. 1893).

Margaret Everhart attended Agnes Scott College and became a nun. George Marlow Everhart (1917-2004) was born in Decatur, Georgia, and became a lieutenant in the Royal Canadian Army. While stationed in Canada he lost his American citizenship due to the Nationality Act of 1940. After regaining his American citizenship, he earned a bachelor's degree in Nuclear Engineering from the University of North Carolina (now North Carolina State College) in Raleigh, North Carolina, and a bachelor's degree in Commercial Science from Georgia State University in Atlanta, Georgia. Later George worked as a professional engineer for the Georgia State Highway Department for over twenty years. His wife, Lucille Bell (1903-1991), was an interior designer. They both died in Waycross, Georgia. Additional biographical information about the Everhart family has not been determined.