Samuel Liddell MacGregor Mathers

Samuel Liddell MacGregor Mathers, born Samuel Liddell Mathers, was a British occultist and member of the S.R.I.A. He is primarily known as one of the three founders of the Hermetic Order of the Golden Dawn, a ceremonial magic order of which offshoots still exist. He became so synonymous with the order that Golden Dawn scholar Israel Regardie observed in retrospect that "the Golden Dawn was MacGregor Mathers."