Charles (Robert) Stansfeld Jones (1886–1950), aka Frater Achad, was an occultist and ceremonial magician. An early aspirant to (the 20th to be admitted as a Probationer, in December 1909) who "claimed" the grade of Magister Templi as a Neophyte. He also became an O.T.O. initiate, serving as the principal organizer for that order in British Columbia, Canada. He worked under a variety of mottos and acronymic titles, including V.I.O. (Unus in Omnibus, "One in All," as an A∴A∴ Probationer), O.I.V.V.I.O., V.I.O.O.I.V., Parzival (as an Adeptus Minor and O.T.O. Ninth Degree), and Tantalus Leucocephalus (as Tenth Degree O.T.O.), but he is best known under his Neophyte motto "Achad" (Hebrew: אחד, "unity"), which he used as a byline in his various published writings.