It appears in the historical record only briefly, mentioned by Clarke as existing in 1334 and again, almost two centuries later, as having been repaired in 1531. Beyond those two dates, little is certain, including exactly where within the castle grounds it stood.

A chancery, in medieval administrative terms, was the office responsible for issuing royal writs and keeping official documents, the bureaucratic engine of governance under the English crown in Ireland. Dublin Castle itself had been the seat of English, and later British, administration in Ireland since the early thirteenth century, and it is no surprise that a building of this function would have existed somewhere within its walls. The reference Clarke identifies places the chancery firmly in the medieval period, with the 1531 repair suggesting it remained in use well into the Tudor era, a time when the crown was reasserting and reshaping its authority across the island. That a repair was deemed necessary implies the building had been standing long enough to require it, and perhaps that it was considered worth maintaining rather than replacing.

Because the chancery has not been precisely located within the castle complex, there is no single spot a visitor can stand and say with confidence that this is where it was. Dublin Castle is, however, open to the public, and the medieval undercroft, the surviving sections of the original Norman tower, and the archaeological remains visible in the lower yard all give a tangible sense of the layered occupation of the site across the centuries. Those with a particular interest in the administrative history of the castle might find it worthwhile to seek out Clarke's 2002 publication, which situates this building within the broader story of the structures that once filled the castle precinct, most of them long since altered beyond recognition or swept away entirely.