Tangier Island off of Virginia, in the Chesapeake:

https://www.bbc.com/travel/article/20180206-the-tiny-us-isla...

Also, for what it's worth:

> Some people have characterised Tangier’s way of speaking as ‘Elizabethan’ or ‘Restoration’ English, but that’s nonsense. Languages aren’t static and the Tangier dialect has changed a lot because of its isolation. It’s a distinct creation of its own," Shores said.