Magnus I, also known as Magnus the Good, was a king of Norway who reigned from 1035 to 1047. He was the son of King Olaf II of Norway and became king after his father's death. Magnus is known for his efforts to unite Norway and for his campaigns in Denmark, where he sought to expand his kingdom. During his reign, Magnus I focused on strengthening the monarchy and promoting Christianity in Norway. He is remembered for his diplomatic skills and military successes, which helped to solidify his rule. Magnus I died in 1047, leaving a legacy as a significant figure in Norwegian history.