An index to the book Hanes Eglwys Cwmllynfell [The history of Cwmllynfell Church, an Independent Chapel in Llangiwg Parish] by Reverends J. Dyfnallt Owen M.A.. J. D. Jones and Ben Davies  has been provided by Gareth Hicks. Here also are some extract
Non Conformist Registers Deposited at the Public Record Office, London
OS Map Ref
*1822-37 at PRO
1908-88 at W GLA RO
(*These entries are shown incorrectly under Cwmafan, Michaelstone super Avon in the source book Nonconformist Registers of Wales, NLW 1994 (error confirmed by NLW).
The film at the PRO says it is the register of Cwmllynfell, Alltwen and Cwmaman, Independent, of Shilbyll(Cilybebyll), Llanguicke, Llangadock in the counties of Carmarthen and Glamorgan. It gives the founding dates as 1760 for Cwmllynfell, 1773 for Cwmaman and 1770 for Alltwen. The first entry in the book was 1767 and the latest noticed was 1835 - these were both baptisms. There was a page of burials with dates between 1760-1769. )
The following Religious Institutions are covered in the Mormon International Genealogical Index (IGI) :-