Olaf II Haraldsson (995 – 29 July 1030), later known as St. Olaf, was King of Norway from 1015 to 1028. He was posthumously given the title Rex Perpetuus Norvegiae (English: Eternal/Perpetual King of Norway) and canonised in Nidaros (Trondheim) by Bishop Grimkell, one year after his death in the Battle of Stiklestad on 29 July 1030. His remains were enshrined in Nidaros Cathedral, built over his burial site.