Claims on the titular Ducal title by Spanish nobles at various times were not to be considered legitimate by the French, and its use by Louis XIV demonstrated that as the title had merged into the crown of France only the King could assert the title himself or bestow it on another.
Nõudeid titulaarsele hertsogitiitlile Hispaania aadli poolt erinevatel aegadel ei peetud prantslaste poolt seaduslikeks, ja selle kasutamine Louis XIV poolt demonstreeris, et kui tiitel on ühendatud Prantsusmaa krooniga, võib vaid kuningas tiitlit ise kasutada või seda teistele annetada.