Antonia Visconti (born after 1350, probably about 1360, Milan – 16 March 1405, Stuttgart) was Countess of Württemberg.
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Family
Antonia was the tenth of 17 children of Bernabò Visconti, Lord of Milan. She was one of the 13 legitimately born children from his marriage to Beatrice Regina della Scala from the Scaliger family, the lords of Verona.
Antonia's sister Taddea Visconti married Stephen III, Duke of Bavaria and was mother of Isabeau of Bavaria, wife of Charles VI of France and ancestor to some notable people in history, including the Tudor Dynasty. Another sister, Agnes, married Francesco I Gonzaga and was executed for supposed adultery in 1391. Antonia's youngest sister Elisabetta was married to Ernest, Duke of Bavaria.
Antonia's maternal grandparents were Mastino II della Scala and his wife Taddea da Carrara. Her paternal grandparents were Stefano Visconti and his wife Valentina Doria.
Her father Bernabò was a cruel and ruthless despot, and an implacable enemy of the Church. He seized the papal city of Bologna, rejected the Pope and his authority, confiscated ecclesiastical property, and forbade any of his subjects to have any dealings with the Curia. He was excommunicated as a heretic in 1363 by Pope Urban V, who preached crusade against him. When Bernabò was in one of his frequent rages, only Beatrice Regina (her mother) was able to approach him.





