Saint-Yves d’Alveydre, Alexandre
Alexandre Saint-Yves d’Alveydre (1842 – 1909) was a French occultist, who placed the destruction of Atlantis around 12,000 BC and attributed the building of the Sphinx to Atlantean refugees.
His belief regarding the age of the Sphinx inspired one of his followers, R. A. Schwaller de Lubicz, to develop his ideas further.
Many of his concepts were also adapted by Blavatsky and Steiner.