Augustine of Canterbury was a Christian missionary and the first Archbishop of Canterbury. He was sent by Pope Gregory I in 597 AD to convert the Anglo-Saxons in England to Christianity. Augustine successfully established a church in Kent and played a crucial role in spreading Christianity throughout the region. He is often referred to as the "Apostle to the English" due to his significant contributions to the Christian faith in England. Augustine's efforts led to the establishment of several churches and the foundation of the English church, which helped shape the religious landscape of the country.