“Darby’s Bed, Galbally
Darby’s Bed is located, like most Irish passage tombs on a hilltop site. Duntryleague Hill is the westerly extension of Slievenamuck hill.
This great Megalith is thought to be the grave of Olill Olum, one of the early Kings of Munster. The name Duntryleague is derived from Dún-Trí-Liag, meaning the fort of three pillar stones. Diarmuid and Gráinne are also said to have rested here in their flight from the angry Fionn Mac Cumhaill”
Taken from aherlow.com/html/heritage_sites.html