C. S. Lewis was born in Belfast on 29th November 1898, and a festival in that city celebrating him is in its second year.
So for the purposes of this, he’s Irish. But is C. S. Lewis a philosopher? A piece in the University of Oxford Practical Ethics blog argues that he is, in C. S Lewis as a moral philosopher:
All decent people believe essentially the same things, he thought. There is, in other words, not just a Universal Moral Grammar, but a Universal Moral Vocabulary. This is an old idea. It’s inherent in the idea and language of natural law. ‘[T]aking the race as a whole’, wrote Lewis, those who referred to the “Law of Nature’ ‘thought that the human idea of decent behaviour was obvious to every one. And I believe they were right.’ Our moral norms are hardwired. ‘It seems, then, we are forced to believe in a real Right and Wrong. People may be sometimes mistaken about them, just as people sometimes get their sums wrong. But they are not a matter of mere taste and opinion any more than the multiplication table.’
Readers may see a certain similarity to the ethical theory of another Ulster man, Francis Hutcheson.