More about gasconade
Gasconade “extravagant boasting; boastful talk” comes straight from French gasconnade “bragging, boasting, a boastful story,” from the noun Gascon, denoting an inhabitant of Gascony in southwest France. Gascon ultimately comes from Latin Vasco, Vascō (inflectional stem Vascon-, Vascōn-), originally denoting the inhabitants of Vasconia, the territory on either side of the Pyrenees. Vascones becomes Guascones in Medieval Latin: Vasco is the source of Basque, and Guascon the source of Gascon. Gasconade entered English in the mid-17th century.