Historical records paint a somewhat confusing picture of this fortification, with the 17th-century historian Westropp identifying it as a peel-tower that appeared on Petty's 1665 maps under the name "Mollish" at Ballineaghtenmore. The castle was reportedly held by Sir James White during this period, though the exact details of his tenure remain sketchy.

The Down Survey map of the North Liberties adds another layer to the mystery, depicting what appears to be the same structure but placing it firmly in the townland of Moylish rather than Ballynanty More. On this map, the castle appears as a tower house surrounded by a small cluster of dwellings, sitting roughly where Moylish House would later be built. Interestingly, no castle is shown at Ballynanty More on the same survey, suggesting either a cartographic error or that the castle's location straddled townland boundaries in ways that confused contemporary mapmakers.

This confusion has led modern archaeologists to suspect that the site at Ballynanty More might actually be a duplicate record of Moylish Castle proper, rather than a separate fortification. The discrepancy between historical sources and maps was common enough in 17th-century Ireland, when place names often had multiple spellings and townland boundaries weren't always clearly defined. Today, visitors to the area will find little physical evidence of the castle itself, though the site remains catalogued in Ireland's archaeological inventory as a testament to the area's medieval past.