Albert Gallatin Mackey, born in 1807, was an American physician and a prominent author, particularly recognized for his scholarly contributions to the study of Freemasonry. After graduating from medical school, he initially practiced medicine in Charleston, South Carolina, but later shifted his focus entirely to writing and research.

Mackey dedicated his life to exploring various subjects, including languages, the Middle Ages, and esoteric symbolism. He developed a particular expertise in Masonic history and philosophy, authoring numerous influential works on the subject. His dedication to Masonic literature led him to establish and edit Masonic periodicals. Beyond his intellectual pursuits, Mackey was also involved in civic life, serving in post-Civil War South Carolina government and holding federal office. He passed away in 1881.

Born in Charleston, South Carolina, Albert Gallatin Mackey was the son of John Mackey, a physician, journalist, and educator. After completing his initial education, Mackey worked as a teacher to finance his medical studies. He earned his medical degree from the College of South Carolina in 1832 and settled in Charleston, where he later served as a demonstrator of anatomy at his alma mater. In 1844, Mackey left his medical practice to pursue writing and research full-time.

Mackey's intellectual interests were broad, encompassing languages, the medieval period, and esoteric subjects. He became a recognized authority on Freemasonry, dedicating significant effort to its history, symbolism, and philosophy. He was a Master of Solomon's Lodge No.1 and held prominent positions within the Grand Lodge of South Carolina and the Scottish Rite. His research extended to abstruse symbolism, cabalistic, and Talmudic studies, demonstrating a deep engagement with mystical and ancient traditions.

Throughout his writing career, Mackey authored numerous books and articles, with his works on Freemasonry being particularly influential. He founded and edited Masonic publications, including 'The Southern and Western Masonic Miscellany' and a quarterly journal dedicated to Masonic interests. His writings aimed to elucidate the intellectual and moral development associated with the Middle Ages and the symbolism inherent in Freemasonry. His most significant contribution to Masonic literature is considered to be the 'Encyclopedia of Freemasonry'.

Beyond his academic and literary work, Mackey was active in public life. He held Unionist sentiments during the Civil War. Following the war, he was appointed Collector of the Port of Charleston by President Andrew Johnson. He also served as the president of the 1868 South Carolina Constitutional Convention and made an unsuccessful bid for the United States Senate in the same year. He later relocated to Washington, D.C., in 1870.