I was told they were approaching via the Gateway at Larantine. That was about as wrong as it could be, they came from Vaderon, opposite end of the Demesnes. Ridiculous.
—Arius Valdayn
The Barter Barony of Larantine, also known as the Gateway Barony of Larantine, was a government in the Ethereal Demesnes centered on Larantine, a planet known as one of the "Four Gateways" of the Demesnes along with Vaderon, Luncaris, and Caldus. The Barony was a voting member of the Diet of the Ethereal Demesnes, categorized as an Oligarchic Demesne, governed and represented by the Barons of Larantine, also known as the Barter Barons.
Larantine, as one of four star systems that were at the mouths of the reliable entrances and exits to the Ethereal Demesnes, was garrisoned and lightly colonized early on during the time of the ancient Ethereal Empire. However, it was only during the reign of the Diet of the Ethereal Demesnes that Larantinian population became significant enough for the planet to achieve independence from outside governance. At this time, the planet gained a more direct voice in the region's interstellar relations and trade with other peoples of the galaxy, and decided to make this its national focus; the new independent planetary government would be headed up by merchant nobility, the Barter Barons of Larantine, who would make trade and commerce their main interest.
By the time of the Clone Wars, Larantine and Caldus, the two Gateway worlds on the side of the Demesnes facing the Unknown Regions, were facing some of the region's worst economic decline. In spite of being two of the only four reliable entrances to the region, both worlds were now ranked among the lowest of the voting members of the Diet, and had recently required government loans to balance their budgets when the war broke out.
Over a century later, during the Second Imperial Civil War, Larantine and Caldus had both recovered significantly. This was in no small part due to the revision of the Ethereal-Chiss Treaty and the beginning of Demesnes exploration outside the boundaries of the galaxy utilizing the Slipspace Hyperdrive, both of which revitalized the economies of the Unknown Regions-side Demesnes, particularly the Gateways of Larantine and Caldus.