Isabella, Countess of Vertus

Isabella of France (1 October 1348 – 11 September 1373) was a French princess and member of the House of Valois, as well as the wife of Gian Galeazzo Visconti, Lord of Milan, although she died before her husband's accession).
Born in Bois de Vincennes, Isabella was the youngest daughter of King John II of France by his first wife, Bonne of Bohemia.
Her maternal uncle Count Amadeus VI of Savoy arranged her marriage with Gian Galeazzo Visconti. As her dowry, Isabella received the county of Sommières, exchanged later for the county of Vertus. On 8 October 1360, Isabella and Gian Galeazzo were married in Milan, and six months later, in April 1361, she was declared sovereign Countess of Vertus. The couple had four children:
Gian Galeazzo (b. Pavia, 4 March 1366 – d. bef. 1376).
Azzone (b. Pavia, 1368 – d. Pavia, 4 October 1381).
Valentina (b. Pavia, 1371 – d. Château de Blois, Loir-et-Cher, 14 December 1408), married on 17 August 1389 to Louis, Duke of Orleans
Carlo (b. Pavia, 11 September 1373 – d. Pavia, 1374).
Isabella died in childbirth in Pavia in 1373.