MELLONS (ST.), a parish in the upper division of the hundred of WENTLLOOG, county of MONMOUTH, 3 miles (N.E. by N.) from Cardiff, containing 551 inhabitants. The living is a discharged vicarage, in the archdeaconry and diocese of Llandaff, rated in the king's books at £ 10. 1. 5., and in the patronage of the Bishop of Llandaff.