Elizabeth and Frederick had two sons, Ulrich II, Count of Celje and Frederick III; the latter would die as a child, while the former would remain his grandfather's sole heir.Grdina, Igor (1994). Celjski knezi v Evropi. Celje: Fit-Media, p. 250 The marriage seems to have been an unhappy one, since the spouses lived separately from at least 1414 onward.Klaić, Nada (1991). Zadnji knezi Celjski v deželah Sv. Krone. Ljubljana-Celje: Založba Prese, pp. 42Šercer, Marija (2011), "Žene Frankopanke", In Modruški zbornik, Vol. 4-5 No. 4-5, 2011. Pp. 26 The situation deteriorated to the extent that Elizabeth's father-in-law Hermann intervened in an attempt to reconcile the spouses. In 1422 (or 1423, according to other sources), Elizabeth and Frederick met at the family castle in Krapina, in the Slavonian County of Zagorje.Klaić, Nada (1991). Zadnji knezi Celjski v deželah Sv. Krone. Ljubljana-Celje: Založba Prese, p. 16 Instead of a reconciliation, however, Elizabeth was found murdered in her chambers.Dvorakova, Daniela (2019), Barbara Celjska. Črna kraljica, Celje: Mohorjeva družba. Pp. 134
