[susan53]

I'd use "variety of English" rather than "dialect" in this case but that's just quibbling over terminology. The answer to your question is yes - lots of people might use "he don't" - for example in London where I come from. I've never heard "in Sunday" but wouldn't want to say that it doesn't exist in some variety somewhere or other.


I suspect that you didn't find much when you were searching Google because your search terms were too wide. You'll find a certain amount under wide searches like "varieties of English" or "English dialects", but try narrowing them to eg "London dialect" "Yorkshire English" "Scots dialects" "West Country English" "Norfolk dialect" - or whatever region you're interested in


If you're particularly interested in London, try "Cockney English" too, and also "Multicultural London English".