Frozza Orseolo
Frozza Orseolo (1015 – 17 February 1071) was a Margravine of Austria by marriage to Adalbert, Margrave of Austria. Life. Frozza was born in Venice as a daughter of Otto Orseolo and his wife Grimelda of Hungary, Doge of Venice, and granddaughter of Pietro II Orseolo. Her brother was Peter, King of Hungary, and she was possibly a sister-in-law of Judith of Schweinfurt. She married Adalbert, Margrave of Austria and later took the name of Adelheid and bore a son Ernest, Margrave of Austria.