CEIDIO (RHOD-GEIDIO), a parish, in the hundred of MENAI, county of ANGLESEY, NORTH WALES, comprising part of the market
and post town of Llanerchymedd, and containing 316 inhabitants. This parish derives its name from the dedication of its
church to St. Ceidio, an eminent British saint, who flourished in the sixth century, and was the founder of several
churches in the principality. It is intersected by the small river Alaw, and is of inconsiderable extent, containing
only a small portion of enclosed and cultivated land: the surface is undulating, rising in some parts into considerable
eminences; the surrounding scenery is pleasingly varied, and the higher grounds afford some good prospects over the
adjacent country. The living is a perpetual curacy, annexed to the rectory of Llantrisaint, in the archdeaconry of
Anglesey, and diocese of Bangor. The church is a small edifice, supposed to have been built about the year 630, and is
situated in a dreary spot on the high grounds above the Alaw. There are some trifling charitable donations and bequests,
the produce of which is distributed among the poor; and five poor men from this parish are entitled to participate in
the benefits of the almshouses at Beaumaris, founded by David Hughes, in 1609. The average annual expenditure for the
support of the poor is A. 82. 19.