Shoshenq (also commonly spelled Sheshonq, Sheshonk, Shoshenk, Shashank) was the name of many Ancient Egyptians with Libu ancestry since the Third Intermediate Period.
Several pharaohs with this name are known, as well as many important state officials: Because vowels are not generally written in the ancient Egyptian language, the exact pronunciation of this name has caused some amount of controversy, and it is common to see both Shoshenq and Sheshonq used in English-language publications.
Unfortunately, unlike some other Libyan rulers of Ancient Egypt, there is no name in the corpus of Old Libyco-Berber text that might be an equivalent to the Egyptian rendering of the name.
For example, the name is recorded in the Neo-Assyrian dialect of Akkadian as šusanqu and susinqu, indicating an initial rounded vowel.
[1] The writings of Manetho, as recorded by the Byzantine historians Sextus Julius Africanus, Eusebius of Caesarea, and George Syncellus use two general forms (with variations depending on the manuscript).