Captain Brownbeard is the captain of the guard in a small village in the domain of Lord Tarbuck. Though his surname is Brownbeard, Captain Brownbeard actually has a white beard. In his youth he was known as the Young Beard.
Following a warning from Captain Kyle Connor of an impending attack on Captain Brownbeard's town, FMB went to Brownbeard in order to gather the militia to fight off the Porkish attackers. After Brownbeard's jovial welcome, FMB managed to relay the information, and Captain Brownbeard roused the militia to fight.