The records of individual ecclesiastical parishes include registers of baptisms, marriages and burials, as well as records of the churchwardens and Parochial Church Councils, parish charities, schools, clubs and societies.
Parish records were deposited at the Clwyd Record Office, following an agreement of 1976 between the Church in Wales and the Welsh County Councils.
The ecclesiastical parish of Trefnant was created, by an order in Council, on 21 January 1855, out of part of the ancient parish of Henllan. It consists of the townships of Llewenni Isaf, Llewenni Uchaf, Banister Isaf and Banister Uchaf.
In 1975, a small portion of the south of the parish went to the parish of Denbigh.
[Information taken http://www.genuki.org.uk/big/wal/DEN/Trefnant/index.html (last accessed July 2015)]