[6] Little is known of the early history of Llanilid after the end of Norman control, though it is known the region boasted an ancient church, a smithy and several displaced small holdings.

The manor of Milton was the chief possession of the Knight of St. John within Glamorgan and its primary form of income for the order was a water mill which sat on the banks of the River Ewenny.

[9] Llanilid remained a rural parish throughout the 18th and 19th century, though with the coming of the industrialisation of South Wales its northern border was transformed by a large opencast mine.

In 1848 Sophia Crichton-Stuart, Marchioness of Bute, wrote to her land agent, expressing concern at the actions of the Earl of Cottenham, then Lord Chancellor, who had the patronage of the parish, "where hardly anyone speaks English", for appointing as rector "a man without Welsh".

[11] According to Thomas Morgan, Llanilid follows the tradition of Welsh place names attached to a parish in taking its title from the dedicated saint of the local church.

This research may be connected to that of famed literary forger Iolo Morganwg, who produced elaborate tales of Ilid going as far as stating that it was the Welsh names of Joseph of Arimathea.

Fenn, who, after studying the Book of Llandaff and Nennius's Historia Brittonum writes in 1962 that the Latin equivalent of Ilid represents the name of a district, similar to Llandovery, and not a person.

[17] The rebuild date is unknown but architectural historians, such as John Newman, find comparisons in the design of Ruperra Castle (1626); also the south wall contains two light Tudor windows.