Hákon IV of Norway, also known as Hákon Hákonarson, was born in 1204 and became king in 1217. He ruled until his death in 1263 and is known for strengthening the Norwegian monarchy and expanding its influence. His reign marked a period of relative peace and stability in Norway, allowing for economic growth and the development of trade. Hákon IV was the son of Hákon III of Norway and Inge the Hunchback. He is often remembered for his efforts to unite Norway and for his role in the Kalmar Union, which sought to bring together the crowns of Denmark, Norway, and Sweden. His legacy includes the promotion of law and order, as well as cultural advancements during his time.