Interesting...many Cajun surnames end in “-eaux” (i.e. Arceneaux, Breaux, Thibodeaux, etc.) while their French counterparts had no, “x”. One theory posited is that in early legal documents, the rate of illiteracy was such that prepared documents would have the name printed for the signer who would then place an, “x” after the printed surname. This theory has been contested, but not with any definitive certitude.
That’s cool.