I have no problem following the name-spelling convention adopted by the Acadian project. I don't think the Acadians immediately changed the spelling of their last names upon arrival in Louisiana though. Here are two links from the web on this subject.
http://www.acadian-cajun.com/cmanew5e.htm
http://www.acadianmemorial.org/ensemble_encore2/cajunroots.htm. "...The surname Breaux, for example, appears in a variety of phonetic forms: Bro, Brau, Braud, Brault, Braut, Braux, Brot, Breau, Breaud, Breaux, Breauld, and Breault. Contrary to the self-effacing Cajun myth of the late twentieth century, the "eaux" ending did not evolve from the practice of appending an illiterate Cajun's mark ,i.e., an "x" to the end of his/her surname at the end of a civil document. The "eaux" ending was the preferred spelling of Acadian surnames for influential Judge Paul Briant of St. Martin Parish in the early nineteenth century. In the prairie parishes, this spelling was applied to virtually all Cajun surnames ending with the "o" sound in the 1830 census, and the spelling has remained the standard means of rendering Cajun surnames ever since. Parishes east of the Atchafalaya River were slower to adopt the newly standardized spellings of Cajun names, and hence the phonetic renderings persisted until well into the nineteenth century...." Acadian Memorial.org
