Line respectively. Ernestine line (Inner Austria 1406–1457) The Ernestine line consisted of Ernest and a joint rule by two of his sons upon his death in 1424, Albert VI the Prodigal (1457–1463) and Frederick V the Peaceful (1457–1493). They too quarreled and in turn divided what had now become both Lower and Inner Austria upon the death of Ladislaus in 1457 and extinction of the Albertinians. Albert seized Upper Austria in 1458, ruling from Linz, but in 1462 proceeded to besiege his elder brother in the Hofburg Palace in Vienna, seizing lower Austria too. However, since he died childless the following year (1463) his possessions automatically reverted to his brother, and Frederick now controlled all of the Albertinian and Ernestine possessions. Frederick's political career had advanced in a major way, since he inherited the Duchy of Inner Austria in 1424. From being a Duke, he became German King as Frederick IV in 1440 and Holy Roman Emperor as Frederick III (1452–1493). Tyrolean line (Further Austria) 1406–1490 The Tyrolean line consisted of Frederick IV and his son, Sigismund the Rich (1439–1490). Frederick moved his court to Innsbruck but lost some of his possessions to Switzerland. Sigismund who succeeded him sold some of his lands to Charles the Bold in 1469 and was elevated to Archduke by Emperor Frederick III in 1477. He died childless, but in 1490, he abdicated in the face of unpopularity and Further Austria reverted to the then Archduke, Maximilian I the Last Knight (1490–1493), Frederick V's son who now effectively controlled all the Habsburg territory for the first time since 1365. Religious persecution The inquisition was also active under the Habsburgs, particularly between 1311 and 1315 when inquisitions were held in Steyr, Krems, St. Pölten and Vienna. The Inquisitor, Petrus Zwicker, conducted severe persecutions in Steyr, Enns, Hartberg, Sopron and Vienna between 1391 and 1402. In 1397 there were some 80–100 Waldensians burnt in Steyr alone, now remembered in a 1997 monument. Duchy and Kingdom During the Habsburg Duchy, there were 13 consecutive Dukes, of whom four were also crowned King of Germany, Rudolf I, Albert I, Frederick the Fair, and Albert V (Albert II as King of Germany), although none were recognised as Holy Roman Emperors by the Pope. When Duke Albert V (1404–1439) was elected as emperor in 1438 (as Albert II), as the successor to his father-in-law, Sigismund von Luxemburg (1433–1437) the imperial crown