Osorkon

   1. (fl. 850–785 BC)

   The name of a high priest of Amun, son of Takelot II and Queen Karomama. He was installed in office by his father but faced opposition from the Thebans and was involved in a series of campaigns to claim his position. He recorded his biography on a long inscription on the templewall at Karnak. It has been suggested that he is to be identified with a later King Osorkon III, who also had the title of high priest and is known mainly from monuments in Thebes and Middle Egypt. If this is true, Osorkon must have lived to an old age.

   2. (reigned c. 984–978 BC)

   Throne name Aakheperre setepenre. A king of Dynasty 21, now known to Egyptologists as Osorkon the Elder. Son of the Libyan chief Sheshonq and Mehtenweskhet. He briefly gained the throne from the Tanite king Amenemope, but it then passed to Siamun, apparently of another family. His nephew, Sheshonq I, reestablished the Libyans to the throne, founding Dynasty 22. The true form of his name was only established after the later kings Osorkon had been numbered, so he does not appear in that sequence.

Historical Dictionary Of Ancient Egypt by Morris L. Bierbrier