The most dangerous champion enters the lists when the great Habsburg prince seizes on the reins of government in Switzerland. In its early stages the rule of the Habsburger is closely linked with, and is indeed the incitement to, the national movement or rising, if such a word may be applied in the case of a people just forming. The famous Habsburg family was of right noble and ancient lineage. Whether they sprang from Swiss soil (Aargau), or had their origin in Alsacia, is not quite settled. As a matter of fact, they were a Swabian family who possessed vast estates in both those countries. Their estates, ("Eigen," allods or freeholds) with Windisch, Brugg Nurri, lay at the junction of the Aare and Reuss, in Aargau. Originally they dwelt in the castle of Altenburg, near Brugg, and subsequently in their manor of Habsburg, on the Wülpelsberg,[25] a little hill overlooking the ancient Vindonissa. Numerous other castles they held as time went on. [Illustration: THE OLD HABSBURG CASTLE (CANTON AARGAU).] Rudolf der Alte (the Old) is the first of the ancestors of whom we know much. He accompanied Frederick II. on his campaigns, and that great emperor stood godfather to his son Rudolf, who was later on to wear his royal crown. On his death the dynasty split into two branches, Habsburg-Austria (senior), and Habsburg-Laufenburg Aargau (junior), the heads being respectively Albrecht the Wise and Rudolf the Silent, his sons. Each of these branches followed its own separate policy, the junior holding to the Papacy. Albrecht cleverly contrived to marry Heilwig of Kyburg, hoping thus to inherit the estates of her childless brother, Hartmann the elder. He died, it was rumoured, whilst engaged in one of the crusades, and his estates passed to his sons, of whom, however, but one survived, our Rudolf of Habsburg. This man within the space of thirty years made his family one of the mightiest in the empire. Rudolf inherited from his father the family estate on the Aare, with Habsburg Castle. Besides this, he succeeded to various titles and lands, to the lordship of several towns in the Aargau, to the prefecture (_Vogtei_) over the religious-houses of Säckingen and Muri, to the landgraviate of Alsacia, and so forth. Though but one-and-twenty when his father died, Rudolf at once displayed great energy, as well as firmness and caution. In the struggle with the Papacy he held to the Staufen. It mattered little to him that his estates were under an interdict, and himself excommunicated. He held faithfully to the illustrious dynasty, and accompanied its last representative, Conradin, across the Alps, to Verona, in 1267. On the death of Conradin on the scaffold at Naples, and the consequent extinction of the Staufen line, Rudolf veered gradually round to the side of the Pope.