The only dwarf I have ever had that could be called a legend. His name was Urist something (it was actually Urist, that is the only reason I remember it) and he was the leader of my very last fort in the 40d series. I gave him the usual social skills required in a leader to start off with, but he was also my fourth miner, untrained. During the first season he broke both his arms and his upper body in a cave-in that was supposed to be controlled.
This didn't seem to bother him at all. As I had no beds at the time he continued to work for the next two years digging and eventually becoming a legendary miner +5. Once all the digging was finished, he became my first axedwarf, and my sheriff. He quickly gained some skill (still with all his broken parts) and killed three goblin ambushes and various kobold thieves. After a year of peace, the first full siege arrived, six wrestler goblins, an axelord and a marksgoblin. As Urist was my only military dwarf, it was up to him to defend his people.
He killed them all, but got shot in the lower body while still a few tiles away. He still seemed to not even notice his wounds at all. After two more sieges that ended in similar fashion, a titan appeared at the edge right near my entrance, crossed my moat and bridge before the lever was pulled, and got his head chopped clean of in the first stoke of Urist's steel axe, who was standing right at the entrance. He then proceeded to be the sole defender against the goblins, and orcs once they showed up, for the remaining six years of my fort.
He never took the time to rest a single one of his wounds, if it didn't stop him from swinging his pick or battle axe, it wasn't even worth noticing. Since he had the name Urist, and was unquestionably dwarfy, I have adopted him as the model dwarf that every dwarf should strive to be like. Until the day they achieve this level, they will always be fodder for mining the last part of a magma-channel complex, or some such task.