Manetho

The surviving text of the ''Aegyptiaca'' continues to be a crucial resource for understanding ancient Egyptian history more than two millennia since its composition. Until the decipherment of Ancient Egyptian scripts in the early 19th century CE, Manetho's work, surviving as fragments cited or quoted by later authors, was a primary source on those scripts. The text remains important in Egyptology.
Eight works have been attributed to Manetho: (1) ''Aegyptiaca;'' (2) ''The Book of Sothis;'' (3) ''The Sacred Book;'' (4) ''An Epitome of Physical Doctrines;'' (5) ''On Festivals;'' (6) ''On Ancient Ritual and Religion;'' (7) ''On the Making of Kyphi'' [a kind of incense]; and (8) ''Criticisms of Herodotus''. Some of these have been considered "ghost" titles.
Of these eight, modern scholars agree that: the historical Manetho is the author of ''Aegyptia;'' that Manetho cannot be the author of ''Sothis;'' and that the ''Criticisms'' is likely a part of the larger ''Aegypticia'' and not written as a separate work. Provided by Wikipedia