For all the people that never heard of Bradensbrook before, it's a Gilnean town and one of the new quest hubs in Val'sharah. Needles to say that the area is gorgeous, and it even has the Gilneas theme playing on the backround, but with a more relaxing, beautiful music tone.
However, they are neutral to both factions - which means Horde players will be able to quest there as well. So as I was searching the place today for the first time, I was wondering who these people are, when, how, and why the fled Gilneas. After a bit of research, I found a book that answred all my questions.
In summary, they were denizens of Pyrewood Village. The Scourge of Lordaeron was drawing closer, and the gates of Gilneas remained closed - but not without reason. At night, they could hear howls of wilds beasts coming from the inside. They knew that a darker evil was brewing within the Greymane Wall, and so seeking sanctuary from there wasn't really the best option. So, they fled.
The book is called 'Ledger of the Sea Wolf'
I'm sure that if you like Gilneas lore as much as I do, you're gonna love this! Enjoy!
http://imgur.com/a/TwiLb