Olaf II, also known as Olaf II of Norway, was a king who ruled from 1015 to 1028. He is often referred to as Saint Olaf due to his canonization by the Catholic Church. His reign is notable for the Christianization of Norway, as he worked to convert the Norse people to Christianity and establish a more centralized monarchy. Olaf II was involved in several military campaigns to consolidate his power and expand his territory. His rule ended when he was defeated at the Battle of Stiklestad in 1030, leading to his death. He is remembered as a national hero in Norway, and his legacy continues to influence Norwegian culture and identity.