(protective lordship) of the Bishops of Basle was shaken off quite early: a charter of the Emperor Henry V dated 8 January 1125 confirms that the abbey possessed imperial protection and free election of their Vogt. Nevertheless, the office afterwards became a possession of the Zähringer, and after their extinction in 1218, was held at Imperial will and gift under the Emperor Frederick II. While this may well have preserved a certain bond with the Emperor, there seems to have been no question of St Blaise's having the status of a "Reichskloster". From the mid-13th century the Vögte (protective lordship) were Habsburg which this drew St. Blaise increasingly into the Austrian sphere of influence. The ties to the Empire remained, however: the abbey was named between 1422 and 1521 in the lists of imperial territories and the Swabian Circle tried in vain in 1549 to claim St Blaise as an imperial abbey. The four imperial lordships which St Blaise's had acquired by the end of the 13th century — Blumegg, Bettmaringen, Gutenburg and Berauer Berg — in fact formed the nucleus of the reichsunmittelbar lordship of Bonndorf, constituted in 1609, from which the Prince-Abbots derived their status in the Holy Roman Empire. 17th century – present The abbey was dissolved in the course of secularisation in 1806 and the monastic premises were thereupon used as one of the earliest mechanised factories in Germany. The monks however, under the last Prince-Abbot Dr Berthold Rottler, found their way to St. Paul's Abbey in the Lavanttal in Austria, where they settled in 1809. From 1934, the remaining buildings have been occupied by the well-known Jesuit college, the Kolleg St. Blasien. St Blaise's "Cathedral" The abbey church burnt down in 1768, and was rebuilt as a Neoclassical round church by the architect Pierre Michel d'Ixnard, with an enormous dome 46 metres across and 63 metres high (the third-largest in Europe north of the Alps), during the years up to 1781 under the Prince-Abbot Martin Gerbert. It was consecrated in 1784. It remains as the Dom St Blasius, or "St Blaise's Cathedral" (so called because of its size and magnificence, not because it is a cathedral in any ecclesiastical or administrative sense). Dom properly denotes or means an important church (as the main church of a town or a city), not a cathedal (seat of a bishop), Kathedrale in German. The effects of another catastrophic