Sure, why not? :P It was added to the "Ireland 1" skill so we could teach things like "Blarney Castle" or "the Blarney Stone". These are things that many non-Irish people using this course would be familiar with (plus, Blarney castle is our course's monument, so it seemed fitting to add this word to allow us to teach related phrases)
It represents the decline of the Irish language, as castles like this would have been a significant foothold for the English language in Irish speaking areas. It's a rather ironic choice of mascot for the Irish course, as well as providing a non-descript logo that has no particular association with Ireland, but what's done is done.
Even with these odd ones mixed in, I never remember what they are :( (took 3 tries on this one) I love that they are trying to mix in at least one sentence from previous lessons but I do wish there was a way to push the review button and actually get a review from any of the sentences you have already learned instead of just a review of one section of lessons.
You were asked to translate it into Irish and the name of that town in Irish requires a definite article, just as the names of many countries require a definite article - an Fhrainc, an Ghearmáin, etc.
The name existed in Irish long before it was translated to English, and the English translation doesn't contain a definite article because place-names in English usually don't.