ALLEN (ST,), a parish in the western division of the hundred of POWDER, county of CORNWALL, 4 miles (N. by W.) from Truro, containing 471 inhabitants. The living is a vicarage, in the archdeaconry of Cornwall, and diocese of Exeter, rated in the king's books at £8. 13. 4., and in the patronage of the Bishop of Exeter. The church is dedicated to St. Alleyn.