Somewhere in the area of Ballybough, on the northside of Dublin, one or more houses from the sixteenth or seventeenth century once stood, occupied and taxed and eventually lost to history. No ruin marks the spot, no commemorative plaque, and no precise coordinates exist. The structure, or structures, are known only through the faint impressions they left in administrative records and cartographic surveys.

The most concrete evidence comes from the Hearth Money Roll for County Dublin, dated 1664. The Hearth Money Roll was a taxation record introduced under the Restoration government, in which households were assessed and charged based on the number of hearths, or fireplaces, they contained. The presence of multiple Ballybough entries in this roll, as documented by Cary writing between 1930 and 1933, tells us that the area supported a settled population substantial enough to be worth collecting tax from. By the time John Rocque produced his detailed map of Dublin and its environs in 1760, Ballybough appeared as a recognisable village, suggesting the community had persisted across the intervening century. De Courcy, writing in 1996, also touches on the area, placing it within a broader geographic and historical context. Whether the houses recorded in 1664 were already old by that point, dating back into the 1500s, or were of more recent construction, the surviving record does not say with precision.

Ballybough today is an inner-city neighbourhood lying just north of the River Tolka, absorbed long ago into the expanding urban fabric of Dublin. A visitor looking for physical traces of these early structures will find none. The value of this site, if it can be called a site at all, lies in what the documentary record implies about ordinary habitation in early modern Dublin, the anonymous households that paid their hearth taxes and went about their lives without leaving anything more durable than a line in a ledger. Those interested in the urban archaeology of the area might find Rocque's 1760 map, widely reproduced and available through the Dublin City Library and Archive, a useful frame for imagining how this stretch of ground once looked before brick and tarmac settled over it.