Anna of Hohenstaufen, born Constance, was an Empress of Nicaea. She was a daughter of Frederick II, Holy Roman Emperor and Bianca Lancia. Wikipedia
Born: 1230
Died: April 1307 (age 77 years), Valencia, Spain
Parents: Frederick II, Holy Roman Emperor and Bianca Lancia
Great-grandparents: Frederick Barbarossa, Roger II of Sicily, Beatrice of Rethel, and more
Grandparents: Henry VI, Holy Roman Emperor, Constance, Queen of Sicily, and Manfred I Lancia
Spouse: John III Doukas Vatatzes (m. 1244–1254)
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