High Quality Content by WIKIPEDIA articles! The Gregorian mission, sometimes known as the Augustinian mission, was the missionary endeavour sent by Pope Gregory the Great to the Anglo-Saxons in 596 AD. Headed by Augustine of Canterbury, its goal was to convert the Anglo-Saxons to Christianity. By the death of the last missionary in 653, they had established Christianity in southern Britain. Along with Irish and Frankish missionaries, they converted Britain and helped influence the Hiberno-Scottish missionaries on the Continent.