Hermes Trismegistus

"Hermes Trismegistus (Ancient Greek: Ἑρμῆς ὁ Τρισμέγιστος, 'thrice-greatest Hermes'; Latin: Mercurius ter Maximus) is the purported author of the Hermetic Corpus, a series of sacred texts that are the basis of Hermeticism."

origin and identity
"Hermes Trismegistus may be associated with the Greek god Hermes and the Egyptian god Thoth. Greeks in the Ptolemaic Kingdom of Egypt recognized the equivalence of Hermes and Thoth through the interpretatio graeca. Consequently, the two gods were worshiped as one, in what had been the Temple of Thoth in Khemenu, which was known in the Hellenistic period as Hermopolis."