A typescript copy of a Baptist church register entitled 'Llyfr Cofnodol Perthynol I Eglwys Gristianogol Dan yr Enw Y Bedyddwyr Neulltyol Yn Cyfarfod yn ngyd ar brydiau i Dori Bara yn yr Amriwiol Leoedd Canlynol Sef Argoed a Phenycoed yn Sir Abertifi Abarduar Bwlch y rhiw Bethel a Salem Yn Sir Gaerfyrddin &c'. The original register covers the period 1751-1857, while Evan Lewis's transcript [see note under 561 below] was used independently and unofficially till 1875 and varies considerably from the original after 1841. The first part of the original register, from 1751 to 1765, is in the hand of the Reverend Timothy Thomas ('Y wisg Wen Ddisglair') of Aberduar, but the greater part of the volume was written by his brother the Reverend Zacharias Thomas and by the latter's son David Thomas of Llwynywermwd, Llan-y-crwys. Most of the entries recorded by David Thomas, from 1789 to 1839, relate only to the churches of Bethel (Caeo), Salem (Caeo), and Bwlch-y-rhiw.

A volume containing extracts relating to the families of Blome, Brigstocke, Edmond, etc.; a pedigree of the family of Thomas of Tyhen in Caio; transcripts and extracts of Welsh Baptist interest, largely from David Jones: Hanes y Bedyddwyr yn Neheubarth Cymru (Caerfyrddin, 1839), among them being lists of ministers of Aberduar Church, of Soar Church, Llandyfaen, and of Newcastle Emlyn, its branches, and Panteg, and histories of Tabernacle and Penuel Churches, Carmarthen, and Rhydwilym Baptist Church; lists and abstracts of St. Davids ecclesiastical probate records, 1602-1817, particularly relating to the family of Phillips; memoranda, anecdotes, and verses; and an armorial, largely of Welsh families, arranged in alphabetical order.