Labbadermot, in the townland of Lurgan in County Galway, carries within it a fragment of early Irish that points toward something much older than the fields surrounding it. The element "leaba" in Irish place-names typically refers to a bed or grave slab, most often associated with an early saint or a megalithic structure, and "Dermot" is likely a corruption of Diarmait, a name woven through both early Christian hagiography and older mythological cycles. A place called the bed or grave of Dermot tends, in the Irish landscape, to signal the presence of a megalithic tomb, a holy site, or the kind of location where folklore and early medieval devotion overlapped for centuries.

Ireland has dozens of sites where the name "Leaba Dhiarmada" attaches itself to portal tombs or wedge tombs, linking the stone structures to the tragic figure of Diarmait from the Fenian cycle, the warrior who eloped with Gráinne and was hunted across the country by Fionn Mac Cumhaill. When communities encountered these ancient megalithic monuments, which are stone burial chambers built roughly between 4000 and 2000 BC, they frequently explained them through the stories they already knew. The result is a landscape in which prehistoric architecture and medieval storytelling are almost impossible to separate. Lurgan in County Galway sits in a part of Connacht where such sites are not uncommon, and the survival of this name in the local townland record suggests the monument, or at least the memory of it, persisted long enough to leave its mark on the map.