The primary source which confirms her parentage and marriage has not yet been identified. 1
Marriage Information:
Unnamed daughter of Géza ÁRPÁD, Prince of Hungary, and Sarolta of Transylvania, married Gavriil Radomir KUMET, Tsar of Bulgaria, son of Samuil KUMET, Tsar of the Bulgarians, and Agathe CHRYSELIE of Durazzo, in 987. The marriage ended in divorce. (Gavriil Radomir KUMET died in Autumn 1015.)
Sources
1 Foundation for Medieval Genealogy, Medlands: daughter.