Bree-landers; where did they come from, and who are they?
 

I know most of the origins of the peoples of Middle-Earth, but I wondered about the people in the lands of Bree. Some of them are hobbits, and some of them are men, just normal men. Are these refugees from Arnor's division and fall?

In 'The Prancing Pony' it says that the Bree-folk considered themselves descendants of the first Men to wander into the West of Middle-earth.

Bree was founded by men from Dunland. It was one of the main villages of Breeland, in the heartland of what was once Arnor. By the time of the War of the Rings, it was diminished in its size and importance. Its survival is due to the work of the rangers of the North.

I would assume that Bree has some Dunlendings in it, and some western and northern men. It's probably populated by those men who migrated south from Anuminas (not sure of spelling), the capital of Arnor. When Arnor was abondoned as a kingdom, the men probably re-settled in more habitable lands.