LLANVAIR-Y-CWMMWD (LLAN-FAIRYN-Y-CWMMWD), a chapelry, in the parish of LLANIDAN, union of CARNARVON, hundred of MENAI, county of ANGLESEY, NORTH WALES, 4 miles (N. W. by N.) from Carnarvon; containing 39 inhabitants. This. place, which is pleasantly situated near the right bank of the river Braint, partakes generally of the scenery by which the parish is characterised; the adjacent country is richly diversified, and the views are interesting and extensive.. The living is. a curacy, annexed to the vicarage of Llanidan the chapel,, dedicated to St. Mary, was for years in a, state of such dilapidation as to preclude the performance of divine service, but has been lately rebuilt. The' chapelry is entitled to participate in the bequest of a, rent-charge of £3 by Ellen Owen in the parish of Llangeinwen, for apprenticing, a poor boy, but it has never shared in the benefaction, from the number of claimants, in. the latter place.