Fiachra

Pronunciation: http://forvo.com/search/Fiachra/

Fiachra does NOT sound like Viagra. It's FEE-akh-ra, just like it says on this site. The "ia" is a diphthong, which means the first part has the long I sound; "ee". The "ch" is pronounced as in loch (one of the few Irish words that has made it to English). This is sometimes a hard sound for English speakers to make (but trust me, you haven't heard the slender r), and some people hate it, because of its throatiness. I pretty sure the "r" is a broad r, which means it's a trilled r, like in Spanish or Italian, which I'm assuming you know how to pronounce. Unless of course it's a slender r, but I'm not that sure how to tell. Perhaps someone will verify it.