Elizabeth of Frankopan (, , , 1386–1422 or 1423), was the first wife of Frederick II of Celje, son and heir to Count Hermann II, Ban of Slavonia. By virtue of her marriage, she became the sister-in-law of the Hungarian Queen Barbara of Celje. Her marriage was troubled by disagreements with her husband, and in 1422 or 1423 she was found killed in her bed. The main suspect for the murder was her husband, who later married Veronika of Desenice, a woman of humble origin. The affair deteriorated the relations between the Houses of Celje and Frankopan, and led to a long-lasting feud between Elizabeth widower Frederick and her cousin Ivan of Frankopan. In the 19th and 20th century, Elizabeth's fate became the source of many literary and artistic adaptations in Slovenian, Croatian, and Hungarian culture. Early life and betrothal Elizabeth was born as the daughter of Stephen, lord of Krk, Modruš and Senj in Croatia, then a kingdom in personal union with Hungary. Her mother was Catherine of Carrara, daughter of Francesco, Lord of Padua. As Stephen's only surviving child, she was "promoted to son" by king Charles II in 1386, and thus granted the right to inherit her father's domains. When she was two, she was betrothed to Frederick, the firstborn son of Count Hermann II of Celje, the powerful captain (governor) of Carniola and cousin of Queen Mary of Hungary, Charles's successor. Her father set aside a dowery of 40.000 (or 32.000, according to other sources) golden ducats, an enormous sum for the time. In addition, the dowry would include half of the island of Krk, the town of Bakar and the nearby fortresses of Trsat, Bribir, and Vinodol. The unusually large dowry can be explained as part of a settlement between Stephen, his brother Ivan (John), and Hermann of Celje on the division of Stephen's lands after his death. When Stephen's died in 1390, Elizabeth came under the tutelage of her uncle Ivan V of Frankopan, while her mother was forced into exile to the Windic March, a stronghold of the Celje dynasty. The negotiations around Elizabeth's marriage thus became protracted, as it was clear that her uncle was trying to lower the promised sum, and keep more of his late brother's inheritance for himself. Finally, the initial sum of money was cut in half, but Elizabeth was to receive the estate of Steničnjak in Slavonia,