Bain becomes king of Dale

In the Year 2977 TA Bain, son of Bard, became King of Dale. 

As a refresher for the old memory, Bard was the man who killed the Dragon Smaug with the Black Arrow, this story is told in The Hobbit. Bard was also a key figure in The Battle of Five Armies and after all that, he was crowned king of Dale officially, though the people had obeyed him as soon as he killed the Dragon. Not only did he prove himself worthy of the crown through his bravery, but he really was king by blood, being related to the last king of Dale. But Dale had not had a king for a long time, and had instead a master, who proved himself a coward and a swindler in time of trouble. So the people decided on a Kind of Dale again, and of course Bard was chosen. So in the year 2977 TA, Bard's son Bain became King of Dale.