 In 1423 Guelders passed to the House of Egmond, which gained recognition of its title from Emperor Sigismund of Luxembourg, but was unable to escape the political strife and internecine conflict that had so plagued the preceding House of Jülich-Hengebach, and more especially, the pressure brought to bear by the expansionist rulers of the Duchy of Burgundy.The first Egmond Duke, Arnold, suffered the rebellion of his son Adolf and was imprisoned by the latter in 1465.Adolf, who had enjoyed the support of Burgundian Duke Philip III ("the Good") and of the four major cities of Guelders during his rebellion, was unwilling to strike a compromise with his father when this was demanded by Philip's successor, Duke Charles the Bold.