GADDESDEN (GREAT), a parish in the hundred of DACORUM, county of HERTFORD, 2 miles (N.W. by N.) from Hemel-Hempstead, containing 1096 inhabitants. The living is a discharged vicarage, in the archdeaconry of Huntingdon, and diocese of Lincoln, rated in the king's books at £10. 1. 10. Mrs. Halsey was patroness in 1820. The church is dedicated to St. John the Baptist. This village, which consists of a few scattered houses, derives its name from the river Gade, upon the south-west bank of which it is situated.