The Duke of Aquitaine reference article from the English Wikipedia on 24-Jul-2004
(provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Duke of Aquitaine

For people who check facts
[Note : The Roman numerals after the names indicate which duke of that name they were and are not necessarily the same as their ordinals for their other titles.]

The persons who held the title of Duke of Aquitaine (which became part of France in 1449 but was an independent duchy before then), with the years they held it, were:

See also: Dukes of Aquitaine family tree