What makes this place unusual is not simply its age, but the layering of time compressed within its boundary walls: the footprint of a medieval church sits enclosed inside a cemetery that has remained in active use into the modern era, all of it tucked along the north-eastern boundary of the Clontarf Castle Demesne.

According to Dillon Cosgrave's account from 1977, the graveyard is positioned at the north-eastern edge of the demesne, the landscaped estate surrounding Clontarf Castle. The site contains the remains of a medieval church, recorded in the archaeological inventory as DU019-015001, which points to a Christian presence here that predates the surrounding suburban development by many hundreds of years. Churches of this kind were often the focal point of early parishes, and their ruins, even when reduced to low walls or ground-level traces, frequently mark the oldest continuously sacred ground in an area. The memorials within the walled enclosure span the eighteenth to the twentieth century, meaning the graveyard accumulated its readable history across a period when Clontarf itself shifted from a coastal village favoured by the Dublin gentry into a busy residential suburb.

The graveyard is relatively large by the standards of such enclosed historic burial grounds, and its walls give it a self-contained character distinct from the castle complex nearby. Because it is still in use as a working cemetery, access is generally straightforward during daylight hours, though visitors should be mindful that this remains a place of active burial and should conduct themselves accordingly. Those with an interest in memorial art or local genealogy will find the range of eighteenth to twentieth century stones worth examining closely, as they reflect the changing fortunes and naming conventions of north Dublin families over roughly two and a half centuries. The medieval church remains are the oldest feature on the site and, depending on ground clearance and vegetation, may require a careful look to distinguish from the general fabric of the walled enclosure.