OAKLEY (GREAT), a parish in the hundred of TENDRING, county of ESSEX, 7 miles (S. E. by E.) from Manningtree, containing 990 inhabitants. The living is a rectory, in the archdeaconry of Colchester, and diocese of London, rated hi the lung's books at £23, and in the patronage of the Master and Fellows of St. John's College, Cambridge. The church is dedicated to All Saints. There is a place of worship for Wesleyan Methodists. This parish, with the other Oakleys, lies contiguous to an inlet of the North sea, opposite Pewit island, and is celebrated as the scene of a bloody battle fought between King Ethelwolf and the Danes. It had formerly a castle, the remains of the keep and moat of which are still visible.