Welsh or Gaelic

[O'Callaghan]

Don't know a lot of Welsh, but hello (good day) is bori da, pronounced like it sounds (borry dah).

Slainte means good health, but in Gaelic, which is a different language from Welsh. In Irish Gaelic (as opposed to Scots Gaelic) you would say it like slan-shuh, but that's not much help if you are trying to speak Welsh, LOL!