Wawel Cathedral and the wedding continued for two weeks. Bona began to plot against the new queen. As a result, the newly wedded couple decided to reside in Vilnius, far from the royal court. Despite the initial euphoria demonstrated by royal subjects, the marriage was unsuccessful from the very beginning. Sigismund Augustus did not find Elizabeth attractive and continued to have extramarital affairs with several mistresses, the most famous being Barbara Radziwiłł. Elizabeth was also known to be timid, meek and apprehensive due to strict upbringing. The young and garrulous king was also repulsed by Elizabeth's newly diagnosed epilepsy and subsequent seizures. Only Sigismund the Old and some nobles showed compassion towards the new Queen, who was disregarded by her husband and scorned by Bona. Sigismund Augustus was indifferent to her health condition; when the seizures continued to intensify he abandoned Elizabeth and returned to Kraków to collect her dowry. He also sent for Ferdinand's doctors to travel the long distance from Vienna knowing that Elizabeth was ailing and deteriorating fast. She eventually died unattended and exhausted from the epileptic attacks on 15 June 1545 at the age of 18. Second marriage From the outset of his reign, Sigismund Augustus came into collision with the country's privileged nobility, who had already begun curtailing the power of the great families. The ostensible cause of the nobility's animosity to the King was his second marriage, secretly contracted before his accession to the throne, with the Lithuanian, Calvinist and former mistress, Barbara Radziwiłł, the daughter of Hetman Jerzy Radziwiłł. The marriage was announced by the king himself on 2 February 1548 in Piotrków Trybunalski. The young and beautiful Barbara was despised by Queen Bona, who attempted to annul the marriage at any cost. The agitation was also abundant at Sigismund's first Sejm (parliament) sitting on 31 October 1548 where the deputies threatened to renounce their allegiance unless the new king repudiated Barbara. The nobles portrayed Barbara as an opportunistic prostitute that charmed the king for her own benefit. That perception was shared with Bona Sforza, who decisively eliminated all her rivals by any means to stay in power. The young monarch even considered abdicating. By 1550, when Sigismund summoned his second Sejm, the nobles had begun to be in his favor; the nobility was rebuked by Marshal Piotr Kmita Sobieński, who accused them of attempting to unduly diminish the legislative prerogatives of the