LLANSOY, a parish, in the union of Chepstow, division of Trelleck, hundred of Raglan, county of Monmouth, 4¾ miles (E. N. E.) from Usk; containing 158 inhabitants. The parish consists by estimation of 1164 acres, of which 768 are arable, 352 pasture and meadow, and 20 woodland. The living is a discharged rectory, valued in the king's books at £6. 10. 10.; net income, £170; patron, the Duke of Beaufort. The glebe comprises 14 acres.