A small circle in the eastern bluffs of the Havens ruled by the ritual of Drawing the Circle. Disputes over trade, justice, and all manner of things is determined by ritualized combat, and the circle is led by anyone who can overcome the current leader in a fair duel. Granted, there's a bit of deference to elders as well, and there aren't necessarily a lot of people enforcing any leader's rule, but surely personal honor is enforcement enough...
The traditional coming-of-age ritual looks concerningly similar to simply sending out a band of young raiders, but they're honorable, too, so it's fine.