This square-shaped earthwork first appeared on the 1837 Ordnance Survey 6-inch map, where it was depicted as what appeared to be a moated site. By the time the revised 1910 OS 25-inch map was produced, the feature was outlined as a small square field measuring approximately 34 metres north to south and 32 metres east to west. Its presence as a cropmark remains visible in aerial photography from 2005 onwards, including clear images captured by Bing Maps in November 2011.

What makes this monument particularly interesting is the confusion surrounding its exact location. When the Record of Monuments and Places map for County Westmeath was published in 1997, this site was incorrectly positioned three fields to the east of its actual location. No cartographic evidence or aerial photography supports a monument ever existing at that mistaken spot, and the absence of a paper file suggests this was likely a mapping error rather than a relocated feature.

The monument visible today through cropmarks likely represents the same moated site that Victorian surveyors documented in 1837, though it wasn’t officially marked as a monument on the 1997 RMP map. These moated sites, typically medieval in origin, were defensive homesteads surrounded by water-filled ditches; common features of the Irish landscape that served both practical and status purposes for their inhabitants. The Milltown example, compiled for archaeological records by Caimin O’Brien in July 2013, stands as a reminder of how historical features can persist in the landscape even when official records become muddled.