"A parish in Berwickshire, about 4 miles long and 3½ broad, containing about 1900 acres. The surface is in general level, declining towards the S. The soil is remarkably good, except towards the N., where it is poor moor ground, on a cold tilly bottom. There is plenty of whin and freestone, fit for building, and clay and shell marl are found in considerable quantity. Population in 1801, 395."
From the Gazetteer of Scotland published 1806, Edinburgh.
There may have been other non-conformist churches at different times.
According to Rev. William Ewing's Annals of the Free Church of Scotland (published 1914 in Edinburgh):
"The congregation formed here [Nenthorn] in 1843 embraced adherents also from the parishes of Stitchel, Smailholm, and Ednam. A site for a church in Smailholm was refused. The congregation at Nenthorn was therefore largely drawn from that parish."
Rev. Ewing writes that by 1848 the membership of this congregation was 170; by 1900 it was 115.
The parish church (Church of Scotland) has registers dating from 1715. Old Parish Registers (before 1855) are held in the National Records of Scotland in Edinburgh, and copies on microfilm may be consulted in local libraries and in LDS Family History Centres around the world. Later parish registers (after 1855) are often held in the National Records of Scotland as are any records of non-conformist churches in the area (often unfilmed and unindexed, and only available there).