Does anyone know what happened to this firm of Architects?

Founded by James Finbarre McMullen in Cork City in the late 19th Century. They were responsible for many works in and around Cork, most notably the Honan Chapel.

His son, also called James Finbarre, carried on the practice but died relatively young in 1957.

I was wondering if anyone had ever come across information on this practice – were they taken over by another firm or did they carry on?

I know it’s a long shot and unlikely that anyone is still around who worked for them but if anyone can help I would be really grateful!