Various saints such as the Celts Samson of Dol and Branwalator (Brelade) were active in the region. Tradition has it that Saint Helier from Tongeren in modern-day Belgium first brought Christianity to the island in the 6th century; part of the walls of the Fishermen's Chapel dates from this period and Charlemagne sent his emissary to the island (at that time called "Angia", also spelt "Agna") in 803. A chapel built around 911 now forms part of the nave of the Parish Church of St Clement.