Saint Olav, also known as Olaf II of Norway, was a king who ruled in the early 11th century. He is best known for his efforts to convert Norway to Christianity, which helped shape the country's religious landscape. After his death in 1030 during a battle, he was declared a saint by the church, and his legacy grew as a symbol of Norwegian unity and faith. His feast day, celebrated on July 29, honors his contributions to Norway's Christian heritage. Many churches and places in Scandinavia are named after him, reflecting his lasting impact on the region's culture and history.