"Groes-faen is a village approximately three miles south of Llantrisant in the county borough of Rhondda Cynon Taf.The village was originated as a hamlet in the 1860s near a trade route from Cowbridge to Cardiff." wikipedia
The church is dedicated to St. David, is in the Benefice of Pentyrch, and the diocese of Llandaff. Details of the present incumbent of this benefice can be found at the Church in Wales website. The church can be located at grid reference ST072808.