Within The Princess Bride, the Dread Pirate Roberts is a name that a number of people go by, including Westley. The first Dread Pirate Roberts became a terror on the seas about twenty years before the action of the novel starts, but tried to give his ship to one of his hands when he wanted to retire. He soon learned that people were only afraid of the name, so the habit became for the current Dread Pirate Roberts to train a first mate, take on a new crew when that the first mate proved ready to become the new Roberts, and then drop off the old Roberts, who by that time transitions to going by his own name and can retire in obscurity. Westley is the fourth or fifth Roberts. In general, The Dread Pirate Roberts is known for being a ruthless pirate and taking no prisoners.