"LANTWIT, LOWER, in the Cwmwd of Rhwng Nedd ac Afan, Cantref of Cron Nedd (now called the Hundred of Neath), Coumty of GLAMORGAN, South Wales: a Chapel, not in charge, to the Rectory of Neath: Patron, The Marquis of Bute: Chapel dedicated to St. Illtyd. The Resident Population of this Parish, in 1801, (including the Hamlets of Clyne, Lantwit Lower, and Resolvend) was 875. The Money raised by the Parish Rates, in 1803, was, £393..18..0. It is 1 m. N.N.E. from Neath. There is a Chapel belonging to Lantwit, called Ynys Fach, which was never consecrated, and is now in ruins. It is situate on the river Neath. " From: A Topographical Dictionary of The Dominion of Wales by Nicholas Carlisle, London, 1811.
"LANTWIT juxta NEATH, or LANTWIT LOWER (LLAN-ILLTYD), a parish comprising the townships of Clyne, Lantwit, and Resolvend, which separately maintain their own poor, in the hundred of NEATH, county of GLAMORGAN, SOUTH WALES, adjoining the borough of Neath, and containing 1117 inhabitants, of which number, 727 are in the hamlet of Lantwit. This parish is pleasantly situated on the river Neath, and comprises a considerable extent of country, which is richly wooded and enlivened with much beautiful and pleasingly diversified scenery. The surface is finely varied, and from the higher grounds are obtained some pleasing and extensive views. The soil is various : coal and iron-ore are found in different parts of the parish ; and there are some extensive quarries of paving-stone of good quality. The principal coal-works are those of Messrs. Riddle, Yong, and Co., in which about forty men are constantly employed; and the quarries, which are not now worked to their full extent, afford employment to about fifteen men. The living is consolidated with the rectory of Neath, in the archdeaconry and diocese of Llandaf. The church is dedicated to St. llltyd, from which circumstance the parish derives its name, properly " Llan-Illtyd," but contracted into " Lantwit." There was formerly a chapel in this parish, called Ynys Vach, but it was never consecrated, and was suffered many years ago to fall into decay. Morgan Jenkins, in 1692, bequeathed a small portion of land to the poor. The average annual expenditure for the maintenance of the poor amounts to £323. 1., of which sum, £205. 16. is raised on the hamlet of Lantwit." ( A Topographical Dictionary of Wales (1833) by Samuel Lewis.)