Late Victorian maps show the village of Threapwood as being partly in Flintshire (on the northern border of Maelor Saesneg), and partly in Cheshire. In 1896, under the "County of Chester (Threapwood) Order", the county boundary, which passes through the village, was adjusted slightly in favour of Cheshire.
The ecclesiastical parish of Threapwood was formed in 1817, from parts of the parishes of Worthenbury, in Flintshire, and Malpas, in Cheshire.
It was initially in the diocese of Chester, but was transferred to the diocese of St. Asaph, by an Order in Council, on 30 July 1849.
By order of the Ecclesiastical Commissioners, it was transferred back to the diocese of Chester on 22 April 1920, shortly after the disestablishment of the Church in Wales.
An Order in Council, dated 26 August 1968, states :
"The area comprising the extra-parochial place of Threapwood shall become and be a separate and distinct parish for ecclesiastical purposes"