Is cosúil go bhfuil go leor bialanna veigeatóracha in Éirinn: http://jakubmarian.com/map-of-vegetarian-friendliness-number-of-vegetarian-restaurants-in-europe-by-country/
According to Wiktionary:
From Old Irish marb, from Proto-Celtic marwos (“dead”) (compare Welsh marw), from Proto-Indo-European mr̥wós (compare mr̥tós), ultimately from the root mer- (“to die”).
From Middle French, from Old French mort, from Vulgar Latin mortu, from Latin mortuus, from Proto-Indo-European mr̥twós, mr̥tós.
If you go back the other way, you end at English "murder";