After the baronial diet of Vadstena, the Gothlanders acknowledged the authority of the administrator, and, the Danes having been driven out West-Gothland and Smaland, the seat of the war was removed to Finland. By the commencement of the next year the principal castles of the interior had fallen into the hands of Gustavus, and some, as those of Westeras and Orebo, were razed to the ground by the now exasperated peasantry. Stockholm and Kalmar, as well as Abo in Finland, yet stood out, and by help of reenforcement which they received at the beginning of 1522, through the Danish admiral Severin Norby, the enemy were again able to resume the offensive. By sallies from the beleaguered capital on April 7th, 8th, and 13th, the camp of Gustavus was set on fire and destroyed, and for a whole month afterward no Swedish force was seen before the walls of Stockholm. The besiegers of Abo were likewise driven off, and the chief adherents of Gustavus, being obliged to flee from Finland, Arvid, Bishop of Abo, with many noble persons of both sexes, perished at sea. Christian himself by new cruelties added to the detestation with which he was regarded in Sweden. The wives and children, of the most distinguished among the barons beheaded in Stockholm, had been conveyed to Denmark, and among them the mother and two sisters of Gustavus, whom the King, in spite of the entreaties of his consort, threw into a dungeon. Here they died, either by violence, as Gustavus himself complains in a letter of 1522 concerning the cruel oppression of King Christian, directed to the Pope, the Emperor, and all Christian princes, or, as others assert, of the plague. An order had also been recently issued by the King to commanders in Sweden to put to death all the Swedes of distinction who had fallen into their hands. The chronicles say that Severin Norby had received this order so early as the summer of 1521, but, instead of complying with it, permitted the escape of many noblemen, who afterward did homage to Gustavus at Vadstena, in order, as he expressed it, that they might rather guard their necks like warriors than be slaughtered like chickens. But in Abo a new massacre was perpetrated at the beginning of the next year by Lord Thomas, the royalist commander there, who afterward, in an attempt to relieve Stockholm, fell, with all his ships, into the hands of Gustavus, and was hanged upon an oak in Tynnels Island.