Pertaining to French settlers of the Acadie region (now Atlantic Canada). The British expelled generations of entrenched settlers in the infamous Acadian Expulsion circa 1755. Some 25% of these expelled persons ended up in Louisiana, where the term Cajun has since been derived from "Acadian". Some Acadians escaped expulsion, and some later returned to the region. The story of the expulsion was made famous in Longfellow's poem, Evangeline.