LLANWENLLWYVO (LLAN-WENLLWYFO), a parish, in the hundred of TWRCELYN, union of ANGLESEY and county of ANGLESEY, NORTH WALES, 5 miles (E. S. E.) from Amlwch; containing 594 inhabitants. This place is situated on the coast of the Irish Sea, and partakes much of the general chameter of dreary sterility by which the mining districts in the immediate vicinity are distinguished, though in some parts the scenery displays features of fertility and even of romantic beauty. Many of the inhabitants are employed in the Parys and Mona copper-mines, in the adjoining parish of Amlwch. LISrs Dulas, the property of Lord Dinorben, is a spacious mansion situated in extensive grounds, within which the parochial church forms a conspicuous and interesting object. The Traeth Dulas, or Dulas sands, at the mouth of the river Dulas, stretch along a part of the shore here, and form a small bay, while other portions of the coast are bold and precipitous; within a short distance is the small island of Ynys Gadarn. The living is a perpetual curacy, annexed to that of Amlwch; the Bishop of Bangor is proprietor of the great tithes, but in half of the parcel called Rhos-y-Mynach, the tithes belong to the Rector of Llaneilian. The church, dedicated to St. Gwenllwyvo, a small neat edifice, is appropriately fitted up for the performance of divine service. About 30 boys and 30 girls are instructed in a National school in the adjoining parish of Llaneilian; and about 200 males and females in a Sunday school. John Parry bequeathed, about 1826, a sum of £50, the interest to be divided annually on Christmas-eve among ten poor persons, which having been invested on the security of the tolls of the road from the town of Beaumaris to the Holyhead post-road, now yields an interest of £2. 10., annually distributed among aged women: a small benefaction of £2, by Robert Prichard, in 1705, has been lost.