I really like Branwell as a first name.
It's not in the database, although it's user-submitted twice. Apparently, it's not considered to be part of the stock of first names. The only person I've heard of who bore this name was Branwell Bronte, brother of Charlotte Bronte, and it was actually his middle name, and he was given the name because it was his mother's maiden name.. He was an alcoholic and laudanum addict who died young because of his addictions, and never lived up to his early promise.
So...do you think it works as a first name? Is it too tied to one person? Is it a bad association because of the fate of Branwell Bronte? A cursed name, perhaps? If it weren't for all of that, would you like it based upon the way it sounds?
I just think it's really cool, but I'm not sure that I would ever use it because of the above reasons.