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Jordan IV of L'Isle-Jourdain
Jordan IV (died 1288) was the Lord of L'Isle-Jourdain and a vassal of Alfonso of Poitou. He was a crusader during the Italian crusades of Guelph against Ghibelline. His son-in-law was Aimery IV of Narbonne, who led the armies of Florence and Anjou in the Battle of Campaldino in 1289 and his brother was the provost of Toulouse.
In 1266, after drawing up a will, he brought a contingent of knights and crossbowmen to Italy with him in support of Charles of Anjou. He was praised by Pope Clement IV and enfeoffed in the Principate and Calabria by Charles, but he soon returned to Gascony. Charles warned him to return or suffer his fiefs to be confiscated and titles revoked, but he lingered until October 1282, when he returned with a new band of soldiers.
- Jordan V, his successor
- Indie, married Bertrand, Lord of Caumont
- Margaret, married Guy of Comminges
From his second marriage he had:
- Bertrand, Lord of Mauvesin, Montagnac, Corbonne, Saint-Paul, Pibrac, Ausun, and Lombières
- Joan, married the aforementioned Aimery
- Thiburge, Lady of Pribac, married Gauthier du Fossé, Lord of Bramenac, and then Bernard IV of Astarac
- Gaucerande, married Stephen Colonna
- Durrieu, Paul. Les Gascons en Italie. Auch, 1885.
- Housley, Norman. The Italian Crusades: The Papal-Angevin Alliance and the Crusades Against Christian Lay Powers, 1254-1343. Oxford University Press: 1982.
- Betti, Maria Pia. "Le tenzoni del trovatore Guiraut Riquier." Studi mediolatini e volgari, 44 (1998), 7–193. Available at Rialto.
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