fremund,
A couple of snippets that might help ( or not)
South Newsham was name of area around Newsham Colliery ( the Hannah Pit) and towards the sea . ( Got it's name as it was in the southern part of the "Township of Newsham", one of Earsdon Parish's 8 "townships".)
As Blyth developed, this "township" became known as "Newsham and South Blyth"
There used to be a thriving tile-making industry within that township ( in fact the community, where tiles were made was called "Tile Sheds.)
But Tweedy Buildings, now Tweedy Street, is in today's Cowpen Village.
But I have a couple of sources to persue.. watch this space.
Michael Dixon