Constance II of Hohenstaufen, also known as Constance II of Sicily and Ann of Sicily (1230 – April 1307) was the daughter of Frederick II, Holy Roman Emperor and Bianca Lancia. In 1250 she married John III Doukas Vatatzes Emperor of Nicaea. Events Kingdom of Leon unites with the Kingdom of Castile. ... January 18 - German king Albrecht I makes his son Rudolf king of Bohemia. ... Frederick II (December 26, 1194 – December 13, 1250), of the Hohenstaufen dynasty, was a pretender to the title of King of the Romans from 1212 and unopposed holder of that monarchy from 1215. ... Bianca Lancia dAgliano (also called Beatrice; c. ... John III Doukas Vatatzes or Ducas Vatatzes (Greek: Ιωάννης Γ΄ Δούκας Βατάτζης, IōannÄ“s III Doukas BatatzÄ“s) (c. ... The Empire of Nicaea was the largest of the states founded by refugees from the Byzantine Empire after Constantinople was conquered during the Fourth Crusade. ...

She died in Valencia, Spain. This article or section does not cite any references or sources. ...

References

• This article was initially summarized from the article in the Italian-language Wikipedia « it:6304674 » , specifically from this version.