Several Christian saints preached the Gospel in the north of England in the late 6th and early 7th centuries AD; in Keswick and the surrounding area the most important figures were St Herbert of Derwentwater and his contemporary St Kentigern. The former, the pupil and friend of St Cuthbert of Lindisfarne, lived as a hermit on an island in Derwentwater, now named after him. Kentigern, who lived and preached in the area before moving to Wales, is traditionally held to have founded Crosthwaite Church, which was the parish church of Keswick until the 19th century.