Countess of Milan.
Daughter of Bernabò Visconti and his wife Beatrice Regina della Scala. Antonia was Countess of Württemberg by her marriage.
Antonia was born in Milan and was the tenth of her parents' seventeen children.
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.
Eberhard III. von Württemberg