Alexandre Saint-Yves d'Alveydre, French occultist (died 1909)

Joseph Alexandre Saint-Yves, Marquis d’Alveydre 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.