"Old Dunleary" and "Dunleary Road" seem to have been erroneously joined to form "Old Dunleary Road".

https://www.mapillary.com/app/?lat=53.2959845&lng=-6.1424949&z=17&focus=photo&pKey=214834866736968&x=0.49213504674329167&y=0.5272449596421506&zoom=0