Some sites are defined by their absence. At Seemochuda in County Waterford, there is, or perhaps was, a cross, and that uncertainty is more or less all that can be said with confidence. The site exists in the historical record as a rumour, a piece of local knowledge noted down and passed on, but never verified.

The sole written reference comes from the Reverend P. Power, writing in 1899 in the Waterford Archaeological Journal. Power was reporting on an ogham discovery in the area, and as something of a footnote to that investigation, he recorded that locals had knowledge of a possible cross at this location. Ogham is an early medieval script, typically carved in vertical strokes along the edges of standing stones, and Power was clearly active in the area during a period when such monuments were being identified and catalogued with fresh enthusiasm. Whether the cross he mentioned was a carved slab, a standing cross-pillar, or some other form of monument, he could not confirm, and the detail has remained unresolved in the century and more since he set it down.