Margaret of Sicily
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Margaret of Sicily (1237–1270), (Margarethe von Hohenstaufen), Imperial Princess and Margravine of Meissen, was the youngest legitimate daughter of Frederick II, Holy Roman Emperor, King of Sicily, by his wife, Isabella of England.
Her paternal grandparents were Henry VI, Holy Roman Emperor and Constance of Sicily. Her maternal grandparents were John of England and Isabella of Angoulême.
Margaret married Albrecht "der Entartete", Margrave of Meissen in 1254. Her son was Margrave Frederick I, namesake of her father, whose descendants became Elector-Dukes of Saxony.