That gap itself is telling. Ireland has thousands of early ecclesiastical remains, many of them roofless shells or bare foundations, and a great number occupy townlands whose names carry older traces of the parishes and territories they once served.

Mulroog as a place-name likely derives from the Irish, and church sites in this part of Connacht often date to the early medieval period, when small monasteries and oratories were established across the landscape by local saints or their followers. These foundations frequently gave rise to parish churches in later centuries, so what survives at any given site might range from a Romanesque doorway to a plain rubble wall to nothing more than a raised earthwork in a field corner. Without more detailed record, the specific character of the Mulroog site, its date, its dedication, and its state of preservation, remains unclear.