The parish itself is perhaps best known for the double-armed cross, a ringed tau cross, mounted above the south doorway of its ruined medieval church, and for a sheela-na-gig, one of the enigmatic carved female figures found on Irish ecclesiastical buildings, set into the same wall. That a memorial stone should occupy the same ground is not surprising; what is notable is how little has been formally recorded about it.

The nature of the stone, its inscription if any, its date, and the person or persons it commemorates remain obscure. Memorial stones in Ireland range widely in type and period, from early medieval slabs incised with simple crosses to post-medieval grave markers bearing names and epitaphs in Irish or English. Without specific details on this example, it stands as one of the many quietly unexamined pieces of a parish that has clearly accumulated layers of devotional and commemorative activity over many centuries. Killinaboy's ecclesiastical remains suggest continuous use of the site from at least the early medieval period, and a memorial stone in that context could plausibly belong to almost any point across a very long span of time.