Hashishin

The Hashshashin (also Hashishin), or Assassins were a religious sect (often refered to as a cult) of Ismaili Muslims (Islam) from the Nizari sub-sect with a militant basis, thought to be active in the 8th to 14th centuries as a mystic Secret Society specializing in terrorising the Abbasid elite with fearlessly executed, politically motivated assassinations (the word "assassin" is generally thought to derive from their name). http://en.wikipedia.org/wiki/Hashishin

• name commonly thought to derive from "Hash Eaters", but that page disputes that practice.

followers of Hassan I Sabbah http://en.wikipedia.org/wiki/Hassan_I_Sabbah

• Hassan i Sabbah X (the tenth in the line) appears as a Sufi mystic, alias Franklin Delano Roosevelt Stuart, in the Schrodinger's Cat Trilogy by Robert Anton Wilson.