Aunis (ōnēs´), small region and former province, W France, on the Atlantic coast. It is now part of the Charente-Maritime and Deux-Sèvres depts. and includes the islands of Ré and Oléron. La Rochelle, the historic capital and one of the leading ports of the region, and Rochefort are the chief cities. A part of Aquitaine, it was recovered from England in 1373 and incorporated into the French crown lands.
"Aunis." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. (February 22, 2018). http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/aunis
"Aunis." The Columbia Encyclopedia, 6th ed.. . Retrieved February 22, 2018 from Encyclopedia.com: http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/aunis