Olaf I of Norway, also known as Olaf Tryggvason, was a king who ruled from 995 to 1000 AD. He is known for his efforts to convert Norway to Christianity and for establishing trade routes. Olaf was a descendant of the royal family and became king after returning from a period of exile. During his reign, Olaf I fought against rival factions and sought to unify Norway under his rule. His leadership was marked by military campaigns and alliances, but he ultimately faced challenges that led to his downfall. He died in the Battle of Svolder, which significantly impacted the future of Norway.