Name given to people from the town of Hartlepool in the North East of England. The reason being during the Napoleonic Wars (around the 1800s) a monkey washed up on the beach at Hartlepool. The unfortunate primate was tried and executed because the locals thought it was French. This is referred to with some misplaced pride now as the town's football club's mascot is called H'Angus the Monkey.
"Hey, did you hear those Monkey Hangers elected their football mascot as their mayor?"
"Well, that's what happens when you live on the wrong side of the Pennines."