Olav II, also known as Olaf II of Norway, was a king who ruled from 1015 to 1028. He is often remembered for his efforts to convert Norway to Christianity and for unifying the country under a single monarchy. His reign was marked by battles against both internal and external enemies, including the Swedes and Danes. After his death in battle, Olav was canonized as a saint by the Catholic Church, and he became a significant figure in Norwegian history. His legacy is celebrated in Norway, particularly through the annual St. Olav's Day, which honors his contributions to the nation and its faith.