and St Mawes. Churches The old parish church of Truro was St Mary's, which was incorporated into the cathedral in the later 19th century. The building dates from 1518, with a later tower and spire dating from 1769. Parts of the town were in the parishes of Kenwyn and St Clement (Moresk) until the mid 19th century, when other parishes were created. The lofty St George's church in Truro, designed by Rev. William Haslam, vicar of Baldhu, was built of Cornish granite in 1855. The parish of St George's Truro was formed from part of Kenwyn in 1846. In 1865 two more parishes were created: St John's from part of Kenwyn and St Paul's from part of St Clement. St George's contains a large wall painting behind the high altar, the work of Stephany Cooper in the 1920s. Her father, Canon Cooper, had been a missionary in Zanzibar and elsewhere. The theme of the mural is "Three Heavens": the first heaven has views of Zanzibar and its cathedral (a happy period in the life of the artist), the second views of the city of Truro including the cathedral, the railway viaduct and St George's Church (another happy period), and the third, above the others, separated from them by the River of Life (Christ is seen bridging the river and 17 saints including St Piran and St Kenwyn are depicted). Charles William Hempel was organist of St Mary's Church for 40 years from 1804 and also taught music. In 1805 he composed and printed Psalms from the New Version for the use of the Congregation of St. Mary's, and in 1812 Sacred Melodies for the same congregation. These melodies gained popularity. The oldest church in Truro is at Kenwyn, on the northern side. It dates from the 14th and 15th centuries, but was almost wholly rebuilt in 1820, having deteriorated to the point where it was deemed unsafe. St John's Church (dedicated to St John the Evangelist) was built in 1828 (architect P. Sambell) in the Classical style on a rectangular plan and with a gallery. Alterations were carried out in the 1890s. St Paul's Church was built in 1848. The chancel was replaced in 1882–1884, the new chancel being the work of J. D. Sedding. The tower is "broad and strong" (Pevsner) and the exterior of the aisles are ornamented in Sedding's version of the Perpendicular style. In the parish