His Bohemian title was challenged by the Hussites who promoted Polish prince Casimir IV Jagiellon as their king and a war erupted.

[3] Polish diplomats continued to pursue the plan for a marriage between Casimir and Elisabeth, who would bring Bohemia as a dowry.

[4] In March 1439, Elisabeth's sister, Anne, was betrothed to William III, Landgrave of Thuringia, son of Frederick I, Elector of Saxony, and was sent to live at the Saxonian court.

For their safety and protection, the two children of Albert and Elisabeth were placed in the care of Frederick III, elected but not crowned Holy Roman Emperor.

[7] When Queen Elisabeth died in December 1442, Emperor Frederick III continued to care for the orphans who spent most of their time in Graz and Wiener Neustadt.

Enea Silvio Piccolomini, the emperor's secretary and future Pope Pius II, wrote De liberorum educatione as instruction for educating the children.

[8] After the death of Władysław III of Poland in the Battle of Varna in 1444, Hungarian nobles recognized Elisabeth's brother Ladislaus the Posthumous as their king.

Political ambitions of Ulrich II, Count of Celje, cousin of Queen Elisabeth, led him to demand the release of the children into his custody.

Elisabeth made a tearful public appeal in a city square calling for help to her and her brother, neglected and held virtual captive by the Emperor.

[12] In August 1452, preparing for the Thirteen Years' War (1454–66) with the Teutonic Knights, the Poles sent an embassy to Vienna to once again negotiate marriage between Elisabeth and now-king Casimir IV of Poland.

In turn, Casimir guaranteed Koło, Opoczno, Przedecz as well as a monthly sum of 5,000 golden coins from the Bochnia and Wieliczka Salt Mines.

Elisabeth had to renounce her claims to lands of Austrian rulers; the renunciation would not apply if her brother Ladislaus died without a male heir.

[16] Casimir compensated for the delayed dowry and provided his wife with financial security when in December 1461, after the death of Queen Sophia, he transferred a number of royal lands in Sophia's possessions to Elisabeth, including Korczyn, Wiślica, Żarnowiec, Radom, Jedlnia, Kozienice, Chęciny, Łęczyca, Kłodawa, Pyzdry, Konin, Inowrocław.

[2] Their 38-year marriage was happy and Elisabeth, despite frequent pregnancies, accompanied her husband on almost all travels, including about thirty visits to the Grand Duchy of Lithuania.

[22] After the 1457 death of Elisabeth's childless brother, King Ladislaus the Posthumous, she and her family started to advance their claims to the thrones of Bohemia and Hungary.

However, the Golden Bull of 1356 did not recognize women's inheritance rights and Hungarian and Bohemian nobles considered their monarchy to be elective, not hereditary.

After the death of Corvinus in April 1490, Casimir and Elisabeth supported their son John I Albert as King of Hungary.

After Elisabeth's pleas on behalf of John Albert, who reportedly was her favorite, failed to persuade Vladislaus II to abandon the Hungarian crown, a war erupted between the two brothers in June 1490 and lasted until January 1492.

These soldiers, led by Elisabeth's son Fryderyk, marched to Piotrków Trybunalski where Polish nobles elected John Albert as their King on 27 August.

Her only known political move during the reign of John Albert was asking the King to support Frederick of Saxony in his quest for the title of Grand Master of the Teutonic Knights.

Elisabeth wanted to convince Helena to convert from Eastern Orthodoxy to Catholicism and to obtain a position for her son Sigismund.

[27] She failed in both regards and left Lithuania angered and insulted—perhaps because of this dislike she was passive when John Albert suddenly died in 1501 and did not take any more prominent actions to support Alexander as a candidate to the Polish throne.

[27] In 1503, she funded a chapel within Wawel Cathedral to house the tomb of her son John Albert by Florentine artist Francesco Fiorentino.