John III, Count of Armagnac
In 1390, John claimed the kingdom of Majorca, but was overcome by the troops of Juan I of Aragon, in a battle near Navata. John III consequently led military actions in Roussillon. In 1391, he had to leave for Italy in order to come to assistance of Charles Visconti, lord of Parma and husband of his sister, Beatrix of Armagnac, who was in conflict with his cousin Gian Galeazzo Visconti, duke of Milan.
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).
|Count of Armagnac