In the 11th century, Gascony in southwest France had been incorporated into Aquitaine  and formed with it the province of Guyenne and Gascony . The Angevin kings of England became Dukes of Aquitaine after Henry II married the former Queen of France, Eleanor of Aquitaine, in 1152, from which point the lands were held in vassalage to the French crown. By the 13th century the terms Aquitaine, Guyenne and Gascony were virtually synonymous. At the beginning of Edward III's reign on 1 February 1327, the only part of Aquitaine that remained in his hands was the Duchy of Gascony. The term Gascony came to be used for the territory held by the Angevin  Kings of England in southwest France, although they still used the title Duke of Aquitaine. For the first 10 years of Edward III's reign, Gascony had been a major point of friction. The English argued that, as Charles IV had not acted in a proper way towards his tenant, Edward should be able to hold the duchy free of any French suzerainty. This argument was rejected by the French, so in 1329, the 17-year-old Edward III paid homage to Philip VI. Tradition demanded that vassals approach their liege unarmed with heads bare. Edward protested by attending the ceremony wearing his crown and sword. Even after this pledge of homage, the French continued to pressure the English administration. Gascony was not the only sore point. One of Edward's influential advisers was Robert III of Artois. Robert was an exile from the French court, having fallen out with Philip VI over an inheritance claim. He urged Edward to start a war to reclaim France, and was able to provide extensive intelligence on the French court.

Answer this question based on the article: What happened first: kings of England became Dukes or beginning of Edward III's reign?
kings of England became Dukes