These effigies, common across Ireland from the thirteenth century onwards, were typically commissioned by wealthy patrons, among them Anglo-Norman lords, senior clergy, and prosperous merchants, as a way of projecting status and securing prayers for the soul long after death. The figure carved in stone was rarely a realistic portrait; it was instead a symbol of rank, rendered in the costume, armour, or vestments appropriate to the person's station in life.

Thomastown itself was founded in the thirteenth century by Thomas fitz Anthony, a Welsh-born seneschal of Leinster, and it grew into a significant Anglo-Norman settlement on the River Nore. The town's medieval parish church of St Mary's still stands in partial ruin within the modern town, and it is closely associated with several surviving medieval carvings and funerary monuments. Effigial tombs in such settings were often placed inside or against the walls of parish churches, where they would remain visible to the congregation and continue to prompt intercessory prayer. The specific identity of the figure commemorated by this particular tomb is not documented in the available sources, but its presence points to a community wealthy enough to commission carved stonework during the medieval period.