Within the walls of an ordinary Victorian mansion on the campus of University College Dublin (UCD), massive medieval walls have survived that were long thought to be completely lost. Professor Tadhg O'Keeffe of the UCD School of Archaeology, studying historical sources and architectural details, discovered that the early thirteenth-century castle of Roebuck was "hiding in plain sight" beneath layers of plaster and later rebuildings.
The castle was built shortly after the Norman invasion of 1169. It guarded the southern approaches to medieval Dublin and served as an important stronghold. By the eighteenth century the fortification had lost its military significance and fallen into ruins, and about 150 years ago a modern mansion was erected on its site. The medieval structures were believed to have been completely demolished.
O'Keeffe published the results in the journal Archaeology Ireland. According to his findings, the building looks entirely Victorian on the outside, yet the internal walls, arches and even the courtyard retain medieval features. The yard behind the house today is in fact the inner courtyard of the thirteenth-century castle. The researcher notes that the Georgian and Victorian owners simply built over and clad the old walls rather than destroying them.
Historical records confirm the early dating: the stronghold was built in the first decades of the thirteenth century, within the lifetime of a generation that remembered the Norman conquest. The castle was rebuilt several times during the Middle Ages. Among its inhabitants were the Lord Chancellor of Ireland and, by tradition, King James II in 1689.
The discovery changes the understanding of Ireland's university heritage. UCD can now lay claim to the oldest surviving building among all Irish universities. Previously it was thought that the most ancient structures on campuses dated to later eras.
The case of Roebuck shows how easily history slips from notice when it is hidden beneath modern layers. Such finds are a reminder that many "new" buildings of Europe hold within them fragments of the distant past, if only someone takes the trouble to look deeper.
Further research — surveys, analysis of the masonry and possibly limited excavations — will help to establish the precise dating and the stages of rebuilding. For now, Roebuck Castle serves as a striking example of how what is lost sometimes turns out to be closer than one tends to think.
An attentive look at familiar walls sometimes brings back whole eras that seemed long to have vanished.
