This study argues that the long-standing political union between Aquitaine-Gascony and England was, in parl. sustained and nurtured by numerous forms of contact amI dialogue between the king-dukes of England/Aquitaine and their Gascon subjects. The 'English' Gascons generally considered the king of England as their 'natural lord' ~ for he was duke of Aquitaine or Guyenne as a result of Henry of Anjou's marriage in 1152 to Eleanor, a direct descendant of the ancient and autonomous dukes of Aquitaine. It is not surprising that communication, especially through petitioning, between the Gascons and the kings of England shared many features with those between them and their English subjects. The main difference lay in the scale of this communication. Gascon petitioners, for example, had less frequent recourse to the 'central' government than their English counterparts because of the geographical location, special status and autonomous administration of their duchy. Most Gascon petitions were presented to the king's Council, while a minority were addressed to the English Parliament, despite the existence of specific committees to receive and 'try' them. A decline in the number of petitions received and heard by the royal administration in the second half of the fourteenth century can be observed in Gascony as well as in England. A turning-point in the history of Anglo-Gascon Aquitaine took place during t~e tenure of the principality of Aquitaine (1362-72) by Edward the Black Prince. This period exerted a ) profound influence on the administrative organization of Guyenne and on the subsequent relationship between the Gascons and the king-dukes from 1372 until the end of English rule in 1453. The period of the principality, for instance, saw the creation of the Three Estates of Guyenne, which continued until 1453. Besides this new, representative dimension, and the creation of an appellate Court of Sovereignty in the duchy, constant correspondence and interaction between Gascony and England served to strengthen the close links between the two countries, their rulers. governors and inhabitants.