In 1468, her hand was requested by Matthias Corvinus, King of Hungary, who on 8 April of that year sent Protas Černohorský z Boskovic, Bishop of Olomouc as his representative.

However, since 1462, Casimir IV had had an alliance with George of Poděbrady, which caused Pope Pius II suspicion after the Thirteen Years' War, during which Poland fought against the Teutonic Order.

In addition, the princess's mother Queen Elizabeth was also against the match, stating that Matthias is a peasant, a midget, a Vlach, a dog, simply not worthy of her (pl: Matyasz chłop, kurczek, Wołoszyn, pies, niegodziem jej).

[2] Despite this, Bishop Protas was chosen to be godfather at the baptism of the new son of King Casimir IV, born on 27 April 1467, who was named Frederick after the Emperor.

Matthias Corvinus asked the hand of Hedwig again in July 1471 and in September 1473 until finally, a definitive refusal was made by Queen Elizabeth.

Casimir IV, in order to protect his south-western borders with the Kingdom of Bohemia (subject to the rivalry between his son Vladislaus and Matthias Corvinus), decided to enter into a closer alliance with Bavaria.

Several German rulers attended the wedding, including Emperor Frederick III and his son Maximilian, Albrecht III Achilles, Elector of Brandenburg, Sigismund, Archduke of Further Austria and ruler of Tirol, Philip, Elector Palatine, Albert, Margrave of Baden-Hachberg, Counts Ulrich V of Württemberg-Stuttgart and Eberhard V of Württemberg-Urach, Landgrave Louis I of Leuchtenberg and Count Otto of Henneberg-Aschach.

Hedwig, who signed her letters as geborene Königin von Polen (Queen of Poland by birth), didn't maintain close contact with her family.