Edit: Funny I replied the answer to "Obviously none of them spoke the language, and he'd ask why not? Great question."
Why did you just move on? You should be happy to have your 'great question' belittling my family answered. It's because of death, and survival, and scraping by to survive, lots of pieces got lost. That was your ownage. That our families were broken people just surviving and sometimes language was one the the pieces we lost. Pieces we are excited to maybe explore when we visit europe, (until we run into people like you). I have an old family bible with Gaelic that my family wrote in it. But that isn't a connection, right?