The history of Cloughanover Castle is pretty much a mystery.
The couple of scraps of information I have found are below.
What is known is that the castle was built as a stronghold by the Anglo-Norman de Burgo family in 1450.
It is claimed that Cloughanover Castle was destroyed by Cromwellian forces in the 17th century.
Not very much remains today, but the fireplace and entrance to the castle latrines/toilets can be seen clearly in (image 3).
Access - The ruin is visable on the right coming from Galway heading towards Headford on the N84.
Take a right turn before the petrol station. This will bring you to Cambells Tavern in Cloughanover
Cloughanover Castle is just across a couple of fields from Cambells Tavern.