Tutankhamun (/ˌtuːtənkɑːˈmuːn/; alternatively spelled with Tutenkh-, -amen, -amon) was an Egyptian pharaoh of the 18th dynasty (ruled c. 1332–1323 BC in the conventional chronology), during the period of Egyptian history known as the New Kingdom or sometimes the New Empire Period. He has since his discovery been colloquially referred to as King Tut. His original name, Tutankhaten, means "Living Image of Aten", while Tutankhamun means "Living Image of Amun". In hieroglyphs, the name Tutankhamun was typically written Amen-tut-ankh, because of a scribal custom that placed a divine name at the beginning of a phrase to show appropriate reverence. He is possibly also the Nibhurrereya of the Amarna letters, and likely the 18th dynasty king Rathotis who, according to Manetho, an ancient historian, had reigned for nine years—a figure that conforms with Flavius Josephus's version of Manetho's Epitome.