Frozza Orseolo (1015 – 17 February 1071) was a Margravine of Austria by marriage to Adalbert, Margrave of Austria. She was also a member of the Venetian House of Orseolo.
Life Frozza was born in Venice as a daughter of Doge Otto Orseolo and his wife, Princess Grimelda of Hungary.Norwich, John Julius. (1982). A History of Venice. New York: Alfred A. Knopf.
Her father, grandfather, and great-grandfather were all Doges of Venice, and were members of the House of Orseolo, whose ancestors were the first historical Doges of Venice, the Ipatos.Hazlitt, W. Carew. (1915). The Venetian Republic: Its Rise, its Growth, and its Fall. A.D. 409–1797. London: Adam and Charles Black. LOC DG676 .H43
Her brother was Peter the Venetian, King of HungaryKristó, Gyula - Makk, Ferenc: Az Árpád-ház uralkodói (IPC Könyvek, 1996) and she was possibly a sister-in-law of Judith of Schweinfurt.
She married Adalbert, Margrave of Austria, of the House of Babenberg, and later took the name of Adelheid. They had 2 sons: Leopold & Ernest, Margrave of Austria.Dümmerth Dezső: Az Árpádok nyomában. Panoráma Kiadó 1977.
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