L'Isle-Jourdain ( or ) was a lordship and then county near Gers in Gascony during the High Middle Ages. It took its name, Jourdain, from its crusading baron who was baptised in the River Jordan on the First Crusade. Its last count sold the fief to the King of France.
Lords Odo c.1000–1038 Raymond 1038–1089 Jordan I 1089–1132 Bernard I 1132–? Jordan II ?–1195 Jordan III 1196–1205, married 1175 to Esclarmonde of Foix (died 1215), had six children Bernard II Jordan 1205–1228, married Indie, daughter of Raymond V of Toulouse, fathered Bishop Bertrand of Toulouse Bernard III 1228–1240 Jordan IV 1240–1271 Jordan V 1271–1303 or 1306 Bernard IV Jordan 1303 or 1306–1340
Counts Bertrand I 1340–1349 John Jordan I 1349–1365 Bertrand II 1365–1369 John Jordan II 1369–1375 Jordan VI 1375–1405 John I 1405–1421
Further reading