The phrase "King of the North" refers to a powerful ruler who holds sway over a vast territory in the Northern hemisphere. There are many synonyms for this term, representing different linguistic and cultural traditions. In Ancient Egypt, the term "Pharaoh of the North" was used to describe the ruler of the Nile Delta region. In Greek mythology, the "Lord of the North" was an epithet given to the god Hyperborean, who lived in a paradisiacal realm beyond the northern winds. The Vikings used the term "Raven King" to refer to their chieftains, while in medieval Europe the monarchs of Scandinavia were known as "Kings of the Nordic Lands".