No plaque marks the spot, no outline in the paving hints at what once stood there. The absence itself is the thing worth noting: a house connected to one of the more administratively complex roles in medieval Irish ecclesiastical life, swallowed so completely by subsequent centuries that nothing remains above ground.

The building was the manse of the Archdeacon of Glendalough, a position that reflected the peculiar dual nature of the Diocese of Dublin and Glendalough, which had been united in the twelfth century following the Anglo-Norman reorganisation of the Irish church. An archdeacon in medieval church governance was a senior cleric responsible for administrative oversight within a diocese, often acting as the bishop's deputy in practical and legal matters. That the holder of the Glendalough archdeaconry maintained a residence in the northern close of St Patrick's Cathedral speaks to the extent to which Glendalough's ecclesiastical structures had become absorbed into Dublin's institutional orbit, even while retaining a distinct title. The cathedral itself had been raised to that status in 1191 under Archbishop John Comyn, and the close that grew around it housed a cluster of clerical residences and administrative buildings. The manse is recorded by Mason in 1819 and referenced in Clarke's later survey, both sources confirming the location but noting the complete loss of physical fabric.

For anyone visiting the cathedral grounds today, the northern close is accessible as part of the open green space around the building. There is nothing to see in the archaeological sense, no earthwork, no exposed stonework, no depression in the ground. What the site offers instead is a chance to think about how densely inhabited these cathedral precincts once were, packed with the domestic and administrative machinery of medieval church life, almost all of which has vanished beneath later landscaping and urban development. The cathedral itself, much restored in the nineteenth century, dominates the view, but the surrounding ground repays a moment of attention precisely because it looks so unremarkable.