Hi Riain, this site really only deals with people searching ancestry usually about 100 years back. I find for more recent times most counties or even areas have a Facebook page for lost family or old photos etc. Not sure about Cork but am aware of pages dealing with old Cork. The pages are usually private and you ask to join. Takes about 24 hours. Search FB for Cork pages or even write a letter or email to the local paper Evening Echo.
Good Luck
Pat