Unas had several daughters and possibly one or two sons who are believed to have predeceased him. Manetho, a third-century BC Egyptian priest of the Ptolemaic Kingdom and author of the first history of Egypt, claims that with Unas' death the Fifth Dynasty came to an end. Unas was succeeded by Teti, the first pharaoh of the Sixth Dynasty, possibly after a short crisis. However, the archaeological evidence suggests that the Egyptians at the time made no conscious break with the preceding dynasty and the distinction between the Fifth and Sixth dynasties might be illusory.