Overview
Taddea Visconti, Duchess of Bavaria (1351 – 28 September 1381) was an Italian noblewoman of the Visconti family, the ruling house in Milan from 1277 to 1447. She was the first wife of Stephen III, Duke of Bavaria, and the mother of the French queen Isabeau of Bavaria.
Early life
Born in Milan in 1351, sometime after 27 June, Taddea was the eldest child of Bernabò Visconti, Lord of Milan, and Beatrice Regina della Scala (1331–18 June 1384). She had fourteen younger siblings, but she was her parents' favorite child. Her paternal grandparents were Stefano Visconti, Lord of Milan, and Valentina Doria, and her maternal grandparents were Mastino II della Scala and Taddea da Carrara.
Taddea's father Bernabò, continually at war with the papacy (for which he was excommunicated), was a ruthless despot, who would, in 1385, be overthrown by his nephew and son-in-law Gian Galeazzo Visconti and later poisoned in the castle of Trezzo.
From Wikipedia (CC BY-SA 4.0).