John III, Count of Armagnac
He was the son of John II of Armagnac, and Jeanne of Périgord.
In 1391, he had to leave for Italy in order to go to the assistance of Charles Visconti, Lord of Parma and husband of his sister, Beatrix of Armagnac. Visconti was in conflict with his acquisitive cousin Gian Galeazzo Visconti, later the duke of Milan, whose ambition was to control the whole of northern Italy.
On May 14, 1378, John III married Marguerite (1363–1443), countess of Comminges (1363–1443). They had two daughters:
- Jeanne, who married Guillaume-Amanieu de Madaillan (1375–1414) in 1409.
- Marguerite who married Guillaume II, Viscount of Narbonne in 1415. He was killed in the battle of Verneuil, on August 14, 1424).
- Jaques, Tony. Dictionary of Battles and Sieges: A-E.
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