Growing up in Green Bay, we played Sheepshead. It's funny, but we used to pronounce it as if it were spelt Schaβkopp. I never heard of Euchre until I moved to Madison, and nobody played Sheepshead. I was surprised when I joined the Navy and met someone from Elmira, NY who also played Euchre. Didn't know they played it in Canada. I'm guessing there was a fair amount of emigration from the West Country and Channel Islands in the UK to those other areas. I know SW Wisconsin has a large Cornish influence from when it was originally settled by lead and zinc miners from that area.