Bridge chapels were a recognisable feature of medieval European urban life, small oratories built onto or immediately beside stone crossings, where travellers might pray before venturing across or give thanks once safely over. Dublin had one of these, and almost nothing remains to mark its existence.

In 1348, a man named John De Graunsete was granted permission to construct a chapel on the stone bridge of Dublin, dedicated to the Virgin Mary. The year is worth pausing on: 1348 was the year the Black Death reached Ireland, sweeping into the country through the port towns and causing catastrophic mortality, particularly in Dublin. Whether De Graunsete's project was conceived in response to that crisis, as an act of devotion in a city gripped by plague, the records do not say. What is clear is that the structure was subsequently referenced in fifteenth-century documents as lying "near the bridge", a phrase suggesting it may have stood beside rather than directly upon the crossing. Scholarly opinion has placed it at the northern end of the bridge, on what is now Inns Quay. Historical mapping analysed by Clarke, and cited in Bradley and King's survey, supports this northern positioning.

There are no visible surface remains. The site sits in an area that has been heavily built over across successive centuries, and any physical trace of De Graunsete's chapel has long since been absorbed into later construction or simply lost. For anyone curious enough to look, the approximate location is on the north quays near the Father Mathew Bridge, which itself occupies roughly the line of the old medieval crossing. Nothing announces the chapel's former presence, which is perhaps fitting for a structure that served as a quiet pause in a journey rather than a destination in itself. The interest lies in knowing what once stood here, and in the habit of looking at an unremarkable stretch of quayside and reading the much older city underneath it.