American author and brother of fellow author Edward Eggleston (1837–1902). Sons of Joseph Cary Eggleston and Mary Jane Craig. After the American Civil War he published a serialized account of his time as a Confederate soldier in The Atlantic Monthly. These serialized articles were later collected and expanded upon and published under the title "A Rebel's Recollections."
He also served as an editor of Hearth and Home magazine in the early 1870s.
His boyhood home at Vevay, Indiana, known as the Edward and George Cary Eggleston House, was listed on the National Register of Historic Places in 1973