Halkyn (Welsh: Helygain) is one of the ancient parishes of Flintshire, comprising the townships of Hendrefigillt, Lygan y Llan and Lygan y Wern. On 27 June 1848, the township of Hendrefigillt went to the new parish of Rhesycae. Although there has been a church at Halkyn for at least 1000 years, the present building dates only from 1878. The old church was demolished, and an entirely new building was erected a short distance away, the cost being met in full by the Duke of Westminster. The new church was consecrated on 29 October 1878. Note Gaves are still in the woods of Halkyn Castle where the original Church was once.