Though it may seem logical to assume that corned beef comes from Cornwall, the "corned" name actually refers to a completely different meaning.

Canned Corned Beef Originated In The Civil War Canned foods ... Corned beef is usually associated with cabbage, and if you're ...

Thus, "corned" refers to the preservation method used on the beef. As for why canned corned beef looks so pink, the book "Processed Meats" (via Science Direct) explains that it's from the sodium ...