Samuel Liddell (or Liddel) "MacGregor" Mathers, born as Samuel Liddell (January 8 or 11, 1854 - November 5 or 20, 1918), was one of the most influential figures in modern Occultism. He is primarily known as one of the founders of the Hermetic Order of the Golden Dawn, a ceremonial magic order of which offshoots still exist today. Mathers died on November 5 or November 20, 1918. The manner of his death is unknown; his death certificate lists no cause of death. Violet Firth claimed his death was the result of the Spanish influenza of 1918.