The fight of Westeras, from its influence on public opinion, acquired greater importance than of itself it would have possessed. Little was gained by the conquest of the town, so long as the castle held out; and how unserviceable a force of peasants was for a siege, Gustavus was often subsequently to experience. Wherever the tidings of his victory came, the people revolted, and he was already enabled to divide his power, and to invest the castles of several provinces. Siege was accordingly laid to Stegborg, Nykoping, and Orebro. A division of the Vermelanders, with the peasants of Rekarne, in Sudermania, was employed in beleaguering the castle of Westeras; of whose exploits, however, nothing else is told than that they shot the councillor Canute Bennetson (Sparre), to whom Slagheck transferred the command, so that he tumbled in his wolfskin coat from the wall into the stream. Howbeit, another detachment reduced Horningsholm in Sudermania; Christian's governors in Vermeland and Dalsland were slain; the people of the former province, under the command of their justiciary, prepared for an attack upon the councillor Thure Jonson, the King's lieutenant in West-Gothland, and, crossing Lake Vener, entered that district.
In Dalsland, fifteen hundred men took up arms; several thousand peasants from Nerike marched across the Tiwed with the same object. Gustavus had been obliged to grant a furlough to his Dalesmen about seed-time; and to supply their place he caused the people of several districts of Upland to be summoned to assemble in the forest of Rymningen, at Œresundsbro; from which point his two captains essayed an attack upon the Archbishop of Upsala. It was St. Eric's Day (May 18th), and a great confluence of people was present at the fair. An assault was expected; for a deputation of four priests and two burgesses, sent from Upsala to the forest, had received from the leaders the answer that it must be Swedes, not outlandish men, who should bear the shrine of holy Eric, and that they would come to take their part in the festival. Bennet Bjugg (Barley), the Archbishop's bailiff, to show his contempt of such foes, caused a banquet to be set out in the open space between the larger and smaller episcopal manor houses of that day, where, before the eyes of the people, he made himself and his fellows merry till late in the night with drinking, dancing, and singing. Roused from a late sleep by an assault on the gates of the fortified house, and finding it beset by the enemy, they attempted to escape by a concealed passage, which then connected the Bishop's house with the cathedral. But the peasants set fire to this passage, which was of wood, and shot fire arrows at the roof of the episcopal residence, in which the flames soon burst forth. The building was laid in ashes, and next day the females of the household, with some burghers of Upsala, crept out of its cellars, in which they had taken refuge. Great part of the garrison perished. The bailiff escaped with a wound from an arrow, of which he died after rejoining his master at Stockholm.
This prelate, Archbishop Gustavus Trolle, had lately returned from a journey to Helsingland, undertaken in order to retain this part of his diocese in its allegiance to the King. Shortly afterward he received, by a messenger from Gustavus, who had himself come to Upsala at Whitsuntide, a letter exhorting him to embrace the cause of his country, to which his chapter had been persuaded to annex a memorial to the same effect. The Archbishop detained the messenger, saying that he would carry the answer himself. He broke up immediately with five hundred German horse and three thousand foot of the garrison of Stockholm, and had come within half a mile of Upsala before Gustavus received intelligence of his approach. This the latter did not at first credit, but remained, expecting an answer to his overture of negotiation, until, about six in the morning, being on horseback upon the sand-hill near Upsala, the spot where he afterward built a royal castle, he saw the Archbishop marching across the King's Mead (Kungsang) toward the town. Gustavus had but two hundred of his so-called foot-goers and a small number of horse with him, for the peasants had returned to their homes. He made a hasty retreat, but was overtaken by Trolle's horsemen at the Ford of Laby. Here a young Finnish noble, who was next to him, in the confusion rode down his horse in the midst of the stream; and he would have been lost had not the rest of his followers turned upon the enemy with such effect as to make them desist from the pursuit.
Gustavus now betook himself to the forest of Rymningen, raised the peasantry of the adjoining districts, and sent out young men under his best captains to surprise the Archbishop on his return. The remains of cattle slaughtered on the road betrayed the ambush to the prelate, who drew off in another direction. He was nevertheless overtaken and attacked, escaping the spear of Lawrence Olaveson only by bending downward on his horse, so that the weapon pierced his neighbor; and he brought back to Stockholm hardly a sixth part of his army. Gustavus followed close after with his collected force, and encamped under the Brunkeberg. Four gibbets on this eminence, stocked with corpses of Swedish inhabitants, attested the character of the government in the capital.
Thus began, at the midsummer of 1521, the siege of Stockholm, which was to last full two years, amid difficulties little thought of nowadays, after the lapse of ages; and the admiration which men so willingly render to the exertions in the cause of freedom have deprived events of their original colors. The path of Gustavus was not in general one of glittering feats, although his life is in itself one grand achievement. What he accomplished was the effect of strong endurance and great sagacity; and though he wanted not for intrepidity, it was of a kind before which the mere warrior must vail his crest. All the remaining movements of the war of liberation consist in sieges of the various castles and fortresses of the country, undertaken as opportunity offered, with levies of the peasantry, whose detachments relieved each other, though sometimes neglecting this duty when pressed by the cares or necessities of their own families. Hence the object of these investments, which was to deprive the besieged of provisions, could only be imperfectly attained, and there were many fortified mansions of which the proprietors adhered to the Danish party, as that of Wik in Upland, which remained blockaded throughout the whole year. These difficulties were the most formidable where, as at Stockholm, access was open by the sea, of which Severin Norby, with the Danish squadron, was master. The scantiness of the means of attack may be discovered from the circumstance that sixty German spearmen, whom Clement Rensel, a burgher of Stockholm, himself a narrator of these events, brought from Dantzic in July for the service of Gustavus, were regarded as a reënforcement of the highest importance. "At this time," says the chronicle, "Lord Gustave enjoyed not much repose or many pleasant days, when he kept his people in so many campaigns and investments, since he bore for them all great anxiety, fear, and peril, how he might lend them help in their need, so that they might not be surprised through heedlessness and laches. So likewise his pain was not small when he had but little in his money chest, and it was grievous to give this answer when the folk cried for stipend. Therefore he stayed not many days in the same place, but travelled day and night between the camps."
In the month of August he arrived at Stegeborg, which was now besieged by his general, Arwid the West-Goth, who had recently repulsed with great bravery Severin Norby's attempt to relieve the castle, and had even begun to take homage for Gustavus from the people of his province, although in this he experienced difficulties. The East-Goths declared that they had been so chastised for their attack on the Bishop's castle at Linkoping the preceding year that they no longer dared to provoke either King Christian or Bishop Hans Brask. The personal presence of Gustavus decided the waverers, and even the Bishop received him as a friend, because he would otherwise have stood in danger of a hostile visitation. Gustavus now convoked a diet of barons at Vadstena, which was attended by seventy Swedish gentlemen of noble family and by many other persons of all classes in Gothland. These made him a tender of the crown, which he refused to accept. On August 24th, therefore, they swore fealty and obedience to him as administrator of the kingdom—"in like manner," add the chronicles, "as had formerly been done in Upland"; whence they seem to have assumed that he had already been acknowledged as such in Upper Sweden, here called Upland, as we often find it in the chronicles of the Middle Age. This was the first public declaration of the nobility in favor of Gustavus and his cause; although the greatest barons in this division of the kingdom, such as Nils Boson (Grip), Holger Carlson (Gere), and Thure Jenson (Roos) in West-Gothland, all three councillors of state, were still in arms for Christian. That the first-named nobleman joined the party of Gustavus before the end of the year we know from his letter of thanks for a fief of which he received the investure. Both the latter were proclaimed in 1523 to be enemies of the realm, as also was the archbishop Gustavus Trolle. He had repaired to Denmark two years before, in order to obtain, by his personal instances with the King, the often-promised relief for the besieged garrison of Stockholm, but was received with coldness and reproaches.
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 reënforcement 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.
After Severin Norby had relieved the capital, the secretary, master Gotschalk Ericson, wrote thence to Christian that there were but eighty of the burghers, for the most part Germans, who could be counted on for the King's service, but of footmen and gunners in the castle there were now eight hundred fifty men, well furnished with all; the peasants were, indeed, weary of the war, but were still more fearful of the King's vengeance, and put faith in no assurances, whence the country could only be reduced to obedience by violent methods; if a sufficient force were sent, East-Gothland, Sodermanland, and Upland would submit to the King, and his grace could then punish the Dalecarlians and Helsingers, who first stirred up these troubles.
The governor of the castle of Stockholm informs the King, in a report on military occurrences of the winter, "that his men had compelled him to consent to an increase of pay on account of the successes they had gained; that he had expelled from the town, or imprisoned, the suspected Swedish burghers; that the peasants would rather be hanged on their own hearths than longer endure the burden of war; that Gustavus, who had in vain tempted his fidelity, had already sent his plate and the chief part of his own movable property to a priest in Helsingland; he (the governor) also transmitted an inventory of the goods of the decapitated nobles."