Fleaden was a pirate bloc, but after a ambitious schemer Flead·Qier managed to take control of most of the authority of the pirate bloc,he made a coup and killed the original leader. After that, he reformed those pirates to be a new faction:"Fleaden".
No one knows how he managed to persuade the pirates to give up evil and return to good, probably a promised amount of gain, probably just use of force, probably even boredom or trust. Mabye even inspiration... However, Fleaden was established, and so a new faction has arison.