What emerged was extraordinary: seven ogham stones, a possible fragment of an eighth, a cross-inscribed stone, the outlines of several ruined buildings, and quantities of human bone. Ogham is an early Irish script, typically carved as a series of notches and lines along the edge of a standing stone, and it was used primarily between the fourth and seventh centuries to record names, often of the dead. To find seven such stones in one place was, and remains, deeply unusual.

The antiquarian John Windele recorded the site in 1838, leaving a sketch that shows the ogham stones arranged in a rough semi-circle on top of the mound, with a slab-lined grave close by. It is a vivid image, though the arrangement he drew would not survive for long. In the mid-nineteenth century, Lord Ventry removed six of the seven ogham stones from the site. Four of them, including the stone now associated with Baile An Reannaigh, were relocated to line the driveway of Burnham House, later Coláiste Íde, a college situated between Dingle and Ventry. The remaining two went to the grounds of Chute Hall near Tralee, and only the seventh stone was left at the original location. The stone in question here stands 1.82 metres high and carries the inscription BROINIONAS. Though the top of the stone is broken, scholars including R. A. S. Macalister, writing in 1945, considered the inscription to be complete. The name it records, BROINIONAS, is a personal name in the genitive case, the standard formula for ogham memorial stones, meaning roughly "of Broinionas".

The stone can be seen today at Coláiste Íde, where it stands among the other three removed from Cill Mhic Uíleáin, lining a driveway rather than a burial mound. It is a quietly odd afterlife for an object pulled from the earth by a storm, recorded by an antiquarian, and then carried off by a landlord, ending up as a kind of garden ornament that happens to bear the name of someone who died well over a thousand years ago.