Illannaskeeoge, near Urlaur in County Mayo, carries in its syllables the Irish word for island, and that is precisely what it is: a small island in Urlaur Lake, recorded as a site of archaeological interest but currently holding its secrets close. The lake sits in quiet drumlin country in the east of Mayo, a landscape shaped by glacial deposits into a scatter of low hills and water bodies, and islands like this one have a long tradition of human use in Ireland, whether as places of refuge, monastic retreat, or the artificial lake dwellings known as crannogs, platforms of timber and stone built out into shallow water and occupied from the Bronze Age through to the early modern period.

Beyond its name and its presence on the archaeological record, the specific history of Illannaskeeoge remains undocumented in any publicly available form at present. What the name and setting do suggest is a place that fitted into a wider pattern of island occupation common across the Irish midlands and west, where water offered both a practical boundary and a degree of protection. Urlaur itself is associated with the Dominican friary founded on the lakeshore in the thirteenth century, and the broader area was evidently considered significant enough to leave several traces in the historical and archaeological landscape. The island may connect to that story, or to something older still, but without further investigation that question stays open.