Not a wall, not a gate, but a single upright stone, recorded on the 1840 Ordnance Survey six-inch map with the annotation 'Liberty Stone', placed exactly where the road crossed the parliamentary boundary of the city. The term 'liberty' here carries legal and administrative weight: in Irish urban history, a liberty referred to the jurisdictional extent of a town or city, the territory within which its laws and courts held sway. This stone was its physical full stop.

The 1840 OS six-inch map is one of the most detailed cartographic records of pre-Famine Ireland, produced through a remarkably systematic survey of the entire country, and its inclusion of this stone suggests the marker was considered sufficiently significant to warrant annotation rather than mere depiction. It stood at a crossing point, the road cutting across an invisible line that separated the governance of the city from that of the surrounding county. By the time the revised OS six-inch map was produced in 1924, the stone had vanished from the record entirely, neither marked nor mentioned, which places its disappearance somewhere in the intervening eight decades.

Today there is nothing to see at this location, which is precisely what makes it worth knowing about. The stone is no longer evident on the ground, and no replacement or commemorative marker appears to have been erected. Visitors to the Friarstown area will find a road that crosses what was once a meaningful administrative frontier, now unmarked and unremarked upon. The interest lies less in what remains than in consulting the 1840 OS map alongside the 1924 edition and tracing the quiet erasure of a boundary that once required a stone to make it legible to the people passing through.