What is "meryey"

Meryey was the king of Libya (or the Libu), during the late 13th century BCE. He was the son of Ded. His reign was contemporary with pharaoh Merneptah of Egypt (1213-1203 BCE). He is mentioned as the architect of a major military alliance amongst his nation, the Meshwesh, Lukka, and the Sea Peoples known as the Ekwesh, Teresh, Shekelesh, and the Sherden. This confederacy, known as "the Nine Bows," went to war against Merneptah in the western delta during the 5th and 6th years of his reign.