No stone marks the spot today, no plaque names it, and even the precise location remains unconfirmed by archaeology. What survives instead is a handful of documentary references and a single entry in the Dublin Assembly Roll that reveals just enough about how the site was being used in the early seventeenth century to make its absence feel strangely significant.

The chapel was dedicated to St Molua, rendered in the records as St Molloy, an early Irish saint whose name was thoroughly anglicised by the time Dublin's civic administrators were writing things down. In 1615, the Dublin Assembly Roll recorded an agreement allowing inhabitants of Thomas Street, James Street, and Francis Street to use the vacant ground at the east end of the chapel for a rather unglamorous civic purpose: the erection of a timber grate with a shed over it, and the provision of a pair of stocks, all to be built at the residents' own expense, for the punishment of disorderly persons and night walkers. By 1620, a lot described as St Molloy's Chapel was recorded at the west end of New Row at Thomas Street. The architectural historian Clarke has proposed that the chapel originally functioned as a wayside church, a small roadside place of worship serving travellers, positioned at the intersection of two ancient Irish roads: the Slige Mhór, one of the five great roads of early medieval Ireland, which is represented today by Thomas Street, and the Slige Midluachra, now roughly followed by St Augustine Street.

The junction of Thomas Street and St Augustine Street is the location Clarke identified as the most likely candidate for the site, though no surface remains are visible and no definitive identification has been made. For anyone curious enough to stand at that corner, the surrounding streetscape offers little to anchor the imagination, but the knowledge that two roads of genuine antiquity once crossed here, and that an early church may have marked that crossing, gives the ordinary traffic island a quietly different quality. The Irish Historic Towns Atlas, published by the Royal Irish Academy, includes a location map of Dublin to 1610 that can help situate the chapel in relation to the medieval city's layout.