Translation according to P. W. Joyce:
Drumminacloghaun in Galway ; Druimin-a'-chloch-áin, ridge of the clochan or stepping-stones. See Aghacloghan [reproduced below].
Aghacloghan, near Carrickmacross, in Monaghan; Ath-a-chlocháin, ford of the steeping-stones. Irish clochan, a row of stepping-stones, corresponds with Scotch clachan, a village; a very natural connection, since villages and towns often grew up at river crossings of any kind; and the Scotch transferred the name of the clachan itself to the village.