Monuments from their reign show that they controlled Upper Egypt in parallel with the Twenty-second dynasty, shortly before the death of Osorkon II.

When Nimlot died in the eleventh year of Takelot II,[6] a fight for the succession broke out.

Takelot II chose prince Osorkon, but Harsiese, grandson of the chief priest, did not agree.

Takelot II died before this new conflict was resolved, and with prince Osorkon far from Tanis, his younger brother Shoshenq III seized power.

Because Harsiese, of the Theban revolt above, disappeared in the twenty-ninth year of Shoshenq III's reign, prince Osorkon effectively controlled Upper Egypt for about a decade as chief priest of Amun.

By this time, Pedubastis and his son Iuput, whom he had appointed as co-regent, had already died, seemingly in the same year (804 BC).

However, Osorkon III installed his eldest son Takelot there, also allowing him to be chief priest of Amun at the same time.

Under his reign the region became more divided again, as Peftjauawybastet and Nimlot, governor of Hermopolis, adopted royal titles.

Rudamon and Iuput II only reigned over Thebes in the final phase of the Twenty-third Dynasty, as Piankhy, king of Napata, put an end to the so-called ‘Libyan anarchy’.