BARNWELL (ST-ANDREW), a parish in the hundred of POLEBROOK, county of NORTHAMPTON, 2 miles (S. by E.) from Oundle, containing 255 inhabitants. The living is a rectory, with that of Barnwell All Saints united, in 1821, in the archdeaconry of Northampton, and diocese of Peterborough, rated in the king's books at £17- 2. 1., and in the patronage of Lord Montague. The church is an ancient structure in the early style of English architecture, with a tower and spire, and has some portions of a later date. There is an endowed free school for poor children, also an almshouse for fourteen infirm men and women. In the reign of Henry T. a castle was erected here, by Reginald le Moine, of which there are considerable remains, including the principal gateway.