Here we go............. Strictly speaking .......................... the northern eastern dialects .......... Geordies are Tynesiders. Folks in Northumberland, Durham, and Wearside,Teeside are quite/very different dialects. Coal mining communities/areas throughout the region have 'pitmatic dialects with subtle differences. Gather speakers from each area and put them socially in the same room (preferably a pub) and you will immediately hear/recognise the different dialects.
Brown Ale or Brown Dog is now a poser's drink for tourists/wannabees. Durham folk would be offended to hear that their 'Worm Song' is Geordie. Get a copy of Blaydon Races and read/hear the difference. The Geordie anthem was really, in my memory, the beautiful love song 'The Waters of Tyne' - especially so, when it is sung by young voices. The series with James Bolam - 'When the Boat comes In' was very accurate. The famous Geordie comic - Bobby Thompson (The Little Waster) was the real deal. It's very easy to get it wrong.
Quite funny really, the examples given: James Bolam (great actor) from (Wearside) I think, Bobby Thompson lived in Shiney Row (hardly Tyneside in my book).
Perhaps the best description of "A Geordie" was given as 'The Scots didn't want us, the English wouldn't have us, so there we are, a race apart.
There was a debate some time ago on a local TV show as to the origin of the term "Geordie". The presenter put forward the idea that dated back to the development of miners safety lamps (there had been a number of very large gas explosions in local mines). A competion was held to design a safety lamp, two main people involved (1) George Stephenson (2) Humphrey Davy. It was claimed that the Stephenson lamp was superior and that the areas that adopted it were named "Geordies". The Davy lamp was actually approved, but it was claimed that he had contacts in high places and the competition was really rigged.
(Takes cover now) What happened to the definition that a Geordie had to be born within the sound of Swans hooter?
And yes, I was, less than a mile from the main gate to Wallsend Shipyard.