Blewitt, Jonas (DNB00)
BLEWITT, JONAS (d. 1805), was one of the most distinguished organists of the latter half of the eighteenth century. He was a pupil of Samuel Jarvis, and about 1795 was organist of the united parishes of St. Margaret Pattens and St. Gabriel Fenchurch, and also of St. Catherine Coleman, Fenchurch Street. He was the author of a 'Complete Treatise on the Organ,' of 'Ten Voluntaries and Twelve Preludes ' for the same instrument, and wrote many songs for the Spa Gardens, Bermondsey, near which he lived. His death took place in 1805.
[Grove's Dict. of Music, i. 249; British Museum Catalogue; preface to Blewitt's Treatise on the Organ.]