Thank to you both and please accept apologies for my late gratitude.
It appears from what you say Black Sheep that the "retired" elderly couple in my question, do indeed qualify for an Irish Medical card regardless of income from two State Pensions ( Teacher and Garda). They are in receipt of a tiny UK pension from his employment there way back in the 50s which seems to meet the qualifying criteria?
I doubt ( Bronte) if Brexit can inhibit this 'right' unless Borris goes on a solo run. He's well capable.
Thanks again for your answers.