I grew up on a ranch which was tended by my father, his brother, and their respective families. We were fairly clannish and mostly didn't interact with the community. As I went to public school, I became aware of terms we used that my classmates didn't: "stirk" for a yearling, "coody" for a donkey, "Seesta here!" meant "Look here!", "fit" was a past tense of "fight", and so on.
I grew curious about this later in life, and discovered after some effort (pre-Internet) that these usages were common in northern England, and specifically in the county of Cumberland. I had been inclined to dismiss rumors that we had been border Scots, but apparently that is what we were.