sentences:  The mosaic reredos was erected in 1904 by the parishioners as a mark of esteem for Thomas Bell's 50th year in the parish;he added another 10 years.Some of the services of the church were in the French language until the 1920s.The parishes in Guernsey were part of the Diocese of Coutances, Normandy, until the latter part of the 15th century, and were then transferred to the Diocese of Salisbury, and then to the Diocese of Winchester soon afterwards, where they remain.