Alright kiddo, I'll explain "lloegyr" to you like you're 5 years old!
So, "lloegyr" is a word that was used a long time ago in a place called Wales. It's not really used anymore, but it used to mean "land of the foreigners".
You see, a long time ago, there were people who lived in what is now Wales, and they called themselves "Cymry". They thought of themselves as being from "the land of the people", or "Cymru" in Welsh.
But then some other people came to Wales from a place called England. These new people were different from the Cymry, and so the Cymry started calling their land "lloegyr", which meant "land of the foreigners".
But now, we don't really use that word anymore. Instead, we just call it "Wales". And everyone who lives in Wales is Welsh, no matter where they or their family originally came from.
So there you have it, kiddo! "Lloegyr" used to be a word for Wales a very long time ago, but now we just call it Wales, and everyone who lives there is Welsh.