Alexandre Saint-Yves d'Alveydre

Joseph Alexandre Saint-Yves, Marquis d’Alveydre (French: [sɛ̃tiv]; 26 March 1842 – 5 February 1909) was a French occultist who adapted the works of Fabre d'Olivet (1767–1825) and, in turn, had his ideas adapted by Gérard Encausse alias Papus. His work on L'Archéomètre deeply influenced the young René Guénon.

He developed the term "synarchy"—the association of everyone with everyone else—into a political philosophy, and his ideas about this type of government proved influential in politics and the occult.