Ireland's language shift: when Irish speakers switched to English

Ireland recorded the Isle Of Man’s last native speakers of her Gaelic language Manx. The Manx language was dying out, with only a handful of elderly native speakers still alive in the late 1940s. A visit by DeValera, the Irish leader, resulted in recording equipment being bought and an Irish folklore collector sent to the Isle of Man with it in a recording van. He travelled to remote areas and recorded elderly people, probably born in the nineteenth century, whose mother tongue was Manx. Similar

An Overview of the Irish Language | Britannica