 Cedd, a missionary monk and later Bishop of the East Saxons, was trained by the Celtic Saint Aidan at Lindisfarne.Cedd's original chapel at Bradwell-juxta-Mare can still be visited.It is understood that at first he set up his wayside preaching cross by a well near the road between Tilbury (another of his establishments) and Chelmsford, having converted Ebba, the Thane of Great Burstead.