LLANVIHANGEL-DIN-SYLWY (LLANFIHANGEL-DIN-SYLWY), a parish, in the union of BANGOR-AND-BEAUMARIS, hundred of
TYNDAETHWY, county of ANGLESEY, NORTH WALES, 5 miles (N. N. W.) from Beaumaris; containing 63 inhabitants. The name of
this parish is derived from the dedication of its church, and its adjunct from the ancient British fortification Din
Sylwy, "the exploratory station," adjacent to that edifice. The parish, a part of which is within the limits of the
borough of Besumaris, is situated on the shore of the Irish Sea: the surrounding scenery is wild and rudely magnificent,
and the prospects from the higher grounds embrace an assemblage of objects more striking from their grandeur than pleasing
from their beauty. There are some very extensive quarries of limestone and marble, which are worked upon a large scale,
affording employment to a considerable portion of the poorer inhabitants. The living is a perpetual curacy, annexed to
that of Llangoed. The church, dedicated to St. Michael, is a small ancient edifice, in a very dilapidated state; the
pulpit, which is of great antiquity, is rudely but very curiously carved. There is a Sunday school, in which from 30 to 35
males and females assemble for mutual instruction; and the interest of a trifling benefaction of £1, by a person unknown,
is annually given to the poorest person in the parish. The fortress of Din Sylwy, otherwise called Bwrdd Arthur, or "
Arthur's round table," is the most extensive in the island, occupying the whole summit of the hill on which it is
situated, and is surrounded by a double wall of large stones placed endwise, with their sharp ends uppermost; the
intervals between them are filled up with small stones, and the ramparts, which are nearly entire, inclose a level area of
almost thirteen acres in extent. It was of impregnable strength, and is evidently of British origin, having been occupied
by the Britons prior to the invasion of the island by the Romans; and several brass colts have been found within the camp
and in its immediate vicinity. The entrance is from the south by a broad path of easy ascent; within the area, which is
perfectly level and dry, are several foundations of circular and elliptical buildings of various dimensions, and beneath
the walls on the north side is a fine spring of water. This post, which, from the extensive view that it commands: over
the surrounding country, was admirably adapted for an exploratory station, was, after their conquest of the Isle of
Anglesey, occupied by the Romans. Numerous fibula, coins, and other Roman relics, have been frequently discovered; and,
in the sum-. mer of 1831, a great number of silver and copper' coins were found, among which were some of Nero, Vespasian,
Constantius, and Constantine, together' with several rings, keys, buckles, and clasps of copper, and other relics of Roman
antiquity.