We, Rudolf, by the grace of God, etc., by this document, declare and publicly proclaim that while we were holding court in a regular diet at Nürnberg, a decision was rendered and all our princes, nobles, and other faithful subjects who were present agreed to it. This decision was that all gifts of imperial lands and possessions confirmed or made in any way by Richard the king, or his predecessors in the Roman empire since the sentence of deposition was passed on Frederick II shall be invalid, and are hereby revoked, except those that shall be approved by a majority of the electoral princes. 149. An Electoral "Letter of Consent," 1282. Stillfried und Maerker, Monumenta Zollerana, II, p. 138; Altmann und Bernheim, no. 15. The power of the electors as well as the weakness of the crown after 1273 are shown by the fact that the electors compelled the king to secure their express and written consent before taking any important action. By this means the electors hoped to control the policy of the king and to make their own positions secure. If what the king proposed to do was not to their interest, they made him pay well for their consent. We give here an interesting example of these "letters of consent." Werner, by the grace of God archbishop of Mainz, etc. Desiring always to comply promptly with the wishes of our most serene lord, Rudolf, king, etc., we entirely and freely give him our permission to grant as a fief the villages of Lenkersheim, Erlebach, and Brucke, with all their belongings, to Frederick, the burggrave of Nürnberg, whenever he wishes. 150. Letter of Rudolf to Edward I, King of England, Announcing his Intention of Investing his Sons with Austria, etc., 1283. Rymer, Foedera, II, p. 259. Rudolf's chief policy was the aggrandizement of his family. By all possible means he endeavored to acquire lands in such a way that they would remain in the possession of his family, no matter who should be elected as his successor. This document is interesting as throwing light on his ambitious foreign relations, but it is still more important because it speaks of a great event in the good fortunes of the Hapsburg house, namely: the acquisition of the duchies of Austria, Styria, and Carinthia, the territorial basis for its future greatness. See no. 110, for the origin of the duchy of Austria.