 Charles had Duke Adolf captured and imprisoned in 1471 and reinstated Arnold on the throne of the Duchy of Guelders.Charles then bought the reversion (i.e., the right of succession to the throne) from Duke Arnold, who, against the will of the towns and the law of the land, pledged his duchy to Charles for 300,000 Rhenish florins.The bargain was completed in 1472–73, and upon Arnold's death in 1473, Duke Charles added Guelders to the "Low Countries" portion of his Valois Duchy of Burgundy.