Gaillard III de Durfort

He inherited the lordship of Duras and Blanquefort from his father, Gaillard II, in 1422.

[5] In the Hundred Years' War between England and France, Gaillard took the side of the English king, who was the feudal suzerain of Gascony.

[2] In 1423, King Henry VI of England appointed Gaillard prévôt of Bayonne,[5][2] a charge he handed over to Guillaume Stone at the king's request in 1439.

In 1436, he signed a contract to fight as an ally (allié) of John I, Count of Foix, and his son, Gaston IV, themselves major supporters of Henry VI.

[7] Gaillard III is last mentioned in a document of 1442 and he was dead by 1444.