On a slight rise in the grasslands of Williamstown in County Westmeath, there was once something worth recording, an earthwork of some kind, substantial enough for a surveyor to mark it down. Today, nothing at the surface confirms it ever existed.

The sole evidence comes from William Larkin's 1808 map of County Westmeath, a county survey that captured the landscape of the Irish midlands at a time when many older features were still faintly legible on the ground. Larkin noted an earthwork at this location, the term generally referring to a raised or embanked structure of human construction, which might in an Irish context indicate anything from a ringfort or enclosure to a boundary feature or burial mound. Whatever it was, it has since vanished entirely, likely levelled by centuries of agricultural activity. The slight rise in the grassland is all that remains, and even that may be coincidental.