The Tavern Brawl was an incident that occured in Mary's tavern. It is where Arthur Pendragon and Merlin met Gwaine and had their first encounter with Dagr. It started off when the thug, Dagr, walking into the tavern and 'claming' his money from Mary. Apparently, Mary didn't provide Dagr with enough money so Dagr threatened her. But Arthur interveined, before Merlin only pushed the problem.