Gillogue, in Co Clare, is the site of a former Burlington factory and of a Clare entrance to the University of Limerick. It is also the site of a lock on the Plassey–Errina Canal, a section of the old Limerick Navigation, and of quarries, gravel pits and lime kilns.
And, according to the 6″ Ordnance Survey map, of around 1840, Gillogue also had a railroad.
The railroad was almost certainly not for carrying passengers; it may have been a light railway, with small wagons pushed by men or pulled by horses, and designed to be taken up and moved elsewhere fairly easily. However, I have no hard information about who owned it, who built it or what it was for. I can make guesses, based on its closeness to the canal and to the quarries, but it would be nice to have evidence.
If, Gentle Reader, you know anything about it, do please leave a Comment below.