sentences:  During the war, fought in 1478, between the Marquis of Oristano Leonardo Alagon and the viceroy of Aragon, the inhabitants of Dualchi swore allegiance to the Marquis and thereupon fought against the Aragonese, but they were defeated.The town then passed under Aragonese rule and became a fief thereof.In the 18th century it was incorporated into the marquisate of Marghine, the owners of which were the Pimentel.