Henllan is one of the ancient parishes of Denbighshire, originally comprising the townships of Banister Isaf, Banister Uchaf, Brynysgub, Erifiat, Gwenynog Llan, Lleweni Isaf, Lleweni Uchaf, Rhanfawr, Rhanhir (or Twysog), Taldrach, Tre'rparc, and Uwchcaerau (or Uwchcaeron).
The church tower is separate from the main church building. It stands on a rock, and is said to be positioned such that its corners point North, South, East and West. The old church was demolished in 1806, and a new, larger, church was erected on the same site. The church was again repaired in 1844, and "restored" in 1878, being re-opened on 31 January 1879.
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For family history information about the church and parish, visit the GENUKI Henllan page.