Hi,

The Cloughey variant is recorded in the alt_name tag (visible here https://www.openstreetmap.org/node/267762962, although there's a lot of un-necessary dross there too). The townland is solely named Cloghy. Your comment & a guick search suggests that Cloughey is more appropriate for the main name (which is what actually gets displayed)

Regards,

Cloughy (as I was called at school) aka SK53