Not just any unnamed shallowing of the water, but a place with a recorded identity: Kilmahonocks Ford, or Kilmahenockes Ford as it appears on an early seventeenth-century map. It is the kind of detail that survives only because someone thought to draw a line on a page, and it offers a glimpse of how the city's edges were navigated before stone and mortar made fords redundant.

The ford appears in the documentary record in two places. Tutty, writing in 1981, notes that prior to the construction of a bridge at Island Bridge in the sixteenth century, the crossing of the River Liffey at that point was made by Kilmahonocks Ford. The second reference comes from a document known as the Riding the Franchises of 1603, compiled by Gilbert from the Calendar of Ancient Records of Dublin. The Riding of the Franchises was a civic ceremony in which the boundaries of Dublin's jurisdiction were formally traced and confirmed, often producing maps and written accounts that recorded the city's edges with some precision. The accompanying map from the 1603 riding names the crossing as Kilmahenockes Ford, fixing it in place at a moment just after the bridge had presumably made it obsolete. The name itself, with its Kilma- prefix suggesting an ecclesiastical or personal association, hints at a longer local history that the surviving sources do not fully explain.

There is nothing to see here now. The notes are explicit on that point: no visible trace remains. The area around Island Bridge today is defined by the bridge itself, the Royal Hospital Kilmainham to the south, and the Liffey flowing as it always has, indifferent to the crossings made above it. For anyone curious about the ford's approximate location, the Island Bridge crossing is the reference point; the ford would have served the same route before the bridge existed. The interest lies not in standing at a spot and seeing something, but in knowing that the river was crossed here for a long time before the crossing was formalised, and that for a brief moment in 1603 someone thought it worth naming on a map.