"Ireland and England."
Translation:Éire agus Sasana.
Sometime correct me if I'm wrong, but it looks like "Béarla" was derived from the Old Irish word for "language," with the original term for English translating to "Saxon language" and bring shortened over time. (Here's the full article on etymology of "Béarla:" https://en.m.wiktionary.org/wiki/B%C3%A9arla)
Meanwhile, it looks like "Sasana" was derived from the word for "Saxon." (Full etymology here: https://en.m.wiktionary.org/wiki/Sasana)
Hope this helps!