William Wynn Westcott (Dec. 17, 1848-June 30, 1925)—"The primary creator of the Golden Dawn was Dr. William Wynn Westcott. A London coroner who was interested in occultism, Westcott was a Master Mason and Secretary General of the Societas Rosicruciana in Anglia or the Rosicrucian Society in England (also called the SRIA). Westcott, along with two others founded the Hermetic Order of the Golden Dawn in 1888. However, the Golden Dawn was definitely Westcott’s brainchild."
SOURCE: The Truth About the Golden Dawn, Chic & Sandra Tabatha Cicero