The Ilston Book is the earliest record of a Baptist church in Wales.
It is named after the location of a Baptist meeting place near the ruins of the old Trinity well, the site of a pre-Reformation chapel, at Ilston Beck in Gower near Swansea.
The Ilston Book is held in the Library of Brown University[1] at Providence, Rhode Island, but is not open to public view.
The full list of 261 members up to 1660 is recorded, and shows that they travelled from a wide geographical area in South Wales.
1, Swansea, MA, William Brackney with Charles Hartman; Mercer University Press, 2013