An Egyptian priest and historian who wrote a history of his country in the 3rd century BC. Though the work is lost, quotations from it in later writings are extremely important for reconstructing the dynastic lists of the pharaohs. The history was probably written in Greek for Ptolemy I (305-282). He provided the basis for the relative chronology of Egypt before the invasion of Alexander the Great. The fragments of his work confirmed the succession of kings where the archaeological evidence was inconclusive, and Manetho's division of the rulers of Egypt into 30 dynasties is still accepted.