Manetho (; Koinē Greek: Μανέθων Manéthōn, gen.: Μανέθωνος) is believed to have been an Egyptian priest from Sebennytos (Coptic: Ϫⲉⲙⲛⲟⲩϯ) who lived in the Ptolemaic Kingdom in the early third century BC, during the Hellenistic period. He authored the Aegyptiaca (History of Egypt) in Greek, a major chronological source for the reigns of the kings of ancient Egypt. It is unclear whether he wrote his history and king list during the reign of Ptolemy I Soter or Ptolemy II Philadelphos, but it was completed no later than that of Ptolemy III Euergetes. Source: Wikipedia (en)