This is supposedly one of the ways the crescent got on the South Carolina state flag.

Under French heraldry, it indicates a third son (when they bothered to use cadency on their coats of arms). Since his chances of inheriting the family lands & fortune were low, many of them set out for Charleston to seek their fortune, following the southern branch of the Huguenots.

https://en.wikipedia.org/wiki/Flag_of_South_Carolina

https://en.wikipedia.org/wiki/Cadency

https://en.wikipedia.org/wiki/Huguenots#North_America