At Sais, in the delta, around 730 B.C., the local king, Tefnakht, began to rebuild the unity of the country around him. He seems to have proceeded by persuasion rather than armed conquest: he made the local rulers recognize his authority and confirmed them as vassals in his powers.
The Twenty-Fourth Dynasty in Ancient Egypt
Once unified in the north, Tefnakht entered Middle Egypt, where it collided with Piankhy who had departed from the south. Of this clash, there is written documentation prepared by Piankhy, who was the winner. Piankhy's tale, dated in his twenty-first year of reign, begins by narrating how a bold delta prince, named Tefnakht, had taken over the whole western region up to Lisht, going up the river with a strong army; as he approached,
the chiefs of the towns and villages had thrown the doors wide open and had gone to follow him like dogs. He then headed east, in Hwer, near Ermopoli, Nemrat the local governor, had razed the walls of nearby Nefrusy, had broken the bonds of loyalty to his sovereign, and had been rewarded by Tefnakht with permission to take whatever he found.
This was too much for Piankhy, who at this point ordered his commanders to set out to retake Egypt. One after another Piankhy took over all the cities previously conquered by Tefnakht, up to the capture of Heliopolis, the holiest of all Egyptian cities, which sanctioned the end of hostilities. Tefnakht surrendered and made a complete act of submission, swearing.
It appears that Tefnakht has been left free to act at his leisure, and a singular stele in the Athens museum represents him as sovereign in his eighth year of reign, in the act of donating land to the goddess Neith of Sais. Manetho does not mention it, but Diodorus and Plutarch cite him under the name of Tnephachthos as the father of Boccoris and as an advocate of a simple life.
Boccoris succeeded his father Tefnakht. He passed away as a judge and legislator, but little is known about him, except that he raised a revolt in Palestine against the Assyrians, who supported him with an Egyptian detachment, and who was defeated.