[1] Elizabeth was a member of the Polish royal House of Piast, the daughter of Władysław I the Elbow-high, prince of Kuyavia, later King of Poland,[2] and Jadwiga of Kalisz.

[citation needed] Following her husband Charles Robert's death, Elizabeth wished to make a good marriage for her eldest surviving son, Louis.

She had her son betrothed to Margaret of Bohemia, daughter of Charles IV, Holy Roman Emperor.

The branch of the Kuyavian Piast family was popular in Hungary, and several members lived in Louis' court.

[7] She intervened and made a state visit; before she returned to Hungary, she bribed the Pope to reverse himself and permit Andrew's coronation.

[7] She also gave her son a ring, which was supposed to protect him from death by blade or poison, and returned with a false sense of security to Hungary.

Elizabeth also left money and possessions to her family: she left Louis several golden vessels, daughter-in-law, Elizabeth of Bosnia - Buda Castle, granddaughter, Mary - a gold wreath, granddaughter, Jadwiga - wreath of lilies, and her niece, Hedwig - a ring.

[9] The exquisite examples of Queen's foundation includes silver Reliquary Shrine with Virgin and Child from about 1350 in the Metropolitan Museum of Art, attributed to Jean de Touyl,[10] most probably created for the convent of the Poor Clares of the Order of Saint Francis at Buda, also founded by the Queen in 1334[9] and silver reliquary of Saint Nicholas in the form of a gothic church from 1344, attributed to Pietro di Simone Gallico in the Museo Nicolaiano in Bari.

[9][12] Queen Elizabeth is one of the supporting characters in Polish historical drama TV series "Korona królów" ("The Crown of the Kings").