Us / Our Variation

The northern English dialect switches 'us' for 'our', as in; "Us mother is going shopping," instead of; "Our mother is going shopping."

There is a number of similar switches, such as replacing 'were' with 'was', as in; "We was rather annoyed," instead of; "We were rather annoyed." It also operates in reverse, with 'was' being switched with 'were', as in; "I were rather annoyed," instead of; "I was rather annoyed." However, the was/were variation is more widespread and occurs in the south too.

Curiously, while this happens in every day speech north of Crew, it doesn't happen in popular music. Vernacular poems, yes, but not popular music.

I wondered whether any of these variants are due to the heavy influence of Saxon grammar, or indeed Danish or Norwegian grammar on the north, but I can't find any definitive answers.