Marked on both the 1839 and 1925 Ordnance Survey maps as a rectangular structure measuring approximately 10 by 6 metres, the building stood on a level plateau overlooking the Wexford countryside. Local tradition attributes its construction to the Prendergast family, though this claim remains unverified by documentary evidence.

The Down Survey of 1656-8, one of Ireland’s earliest comprehensive land surveys, provides an intriguing glimpse into Newtown’s past. At that time, the 176 acres were jointly owned by James Furlong and Richard Cullen, with the terrier noting the presence of small houses and a windmill, though these were situated inland rather than near the coast. Notably, no castle is mentioned in these records, suggesting that what locals called a castle may have been one of the “small houses” documented in the survey, or perhaps was built at a later date.

Until around 1980, a single wall of the structure survived; locals who remember it describe it as quite substantial, hinting at the building’s former solidity. Today, however, no physical trace remains of Newtown Castle. Its complete disappearance serves as a reminder of how quickly Ireland’s built heritage can be lost when left unprotected, leaving only maps, memories, and archaeological inventories to tell its story.