Coastal Confederation

The (Confederación Costeira) was a  alliance of several  in southwest Alutra now part of present-day Ventora. It was formed in response to the Confederation of Montaña to its west. The Coastal Confederation was primarily an economic and defensive pact with no formal central government other than the Council of Dukes (Consello de Duques). Nonetheless, as the richest duke, the Duke of Plenas was the "first among equals" and was accorded the honorific of.

Member states
Seven dukes signed the Coastal Protocols on June 20, 274. Additional duchies joined the confederation between 275 and 321. At its height, twelve duchies were members.