Elizabeth of Hungary (Hungarian: Erzsébet, Polish: Elżbieta; c. 1128 – 21 July 1154) was a member of the House of Árpád and by marriage Duchess of Greater Poland.
This parentage is confirmed in several web sources who followed the message of chronicler Jan Długosz; however, modern historians led by Oswald Balzer refuted this theory on basis of chronological reasons: if Elizabeth's marriage date is correct, she must have been only between 8 and 9 years old, an age which seems extremely young for a bride, even by the standards of the Middle Ages.
Balzer assumed that Elizabeth was a daughter of Prince Álmos, Duke of Croatia (father of King Béla II), a parentage which also is supported by further web sources.
The disadvantage of this hypothesis are the message of medieval chronicles (for example, the Chronicon Polono-Silesiacum), who firmly established that Elizabeth was a daughter of the Hungarian King, a title Álmos never used because he was only a prince.
[1] Around 1136, Elizabeth married with Prince Mieszko, son of the Polish ruler Bolesław III Wrymouth.