On 26 July 1295 Jakub Świnka concluded his first major political victory: despite lack of papal acceptance, he crowned Przemysł II the King of Poland in the cathedral of Gniezno. Although the ruler controlled only a small part of the Polish domain, he was given a powerful weapon against the Bohemian rulers who also had claims to the Polish throne. Because of great authority of the bishop, the act of coronation was not questioned by any European ruler of the epoch. However, the reign of Przemysł II lasted only 7 months: on 8 February 1296 he was murdered in Rogoźno by the Brandenburgians. Following the treaty Kalisz, Świnka backed up Wladislaus the Short, whom he considered the strongest of the candidates to the throne of Greater Poland and Pomerania, and possibly the only ruler who could reunite Poland and liberate it of Bohemian influence. Wladislaus assumed the power in Greater Poland and Pomerania, and added those lands to his tiny domain of Cuyavia. However, the struggle against other pretenders (Henry III of Głogów and Wenceslaus II of Bohemia) weakened his rule and finally led to a conflict with the Catholic hierarchy. Świnka broke the pacts he had with Wladislaus, and on 25 July 1300 crowned Wenceslaus II as the King of Poland. It is probable that he lost his belief in weak Wladislaus and saw the new king as the Slavic ruler who could be able to group all Polish lands in one hand. However, the new ruler adopted a pro-German position and started promoting Germanised Silesians over Polish-speaking priests and politicians. Since 1304 king Wenceslaus also supported Jan Muskata, Cracow bishop of German-Silesian origin, in his struggle for separation of the Diocese of Cracow from the bishopric of Gniezno, which only embittered the conflict. This led to yet another vote, after which Świnka resumed good relation with dukes of Cuyavia, relatives of defeated Wladislaus. After the sudden death of Wenceslaus II on 21 June 1305, Świnka yet again supported Wladislaus. It is not known how he reacted to assassination of Wenceslaus' son, Wenceslas III of Bohemia less than a year later. After a short fight, Wladislaus recaptured all his lands in Cuyavia, and then conquered Lesser Poland and Pomerania. Greater Poland, to which the city of Gniezno belongs, was conquered by Henry III of Głogów and Jakub Świnka moved to Uniejów and Łowicz, cities controlled by Wladislaus. On 20