François

Also Afrikaans, likely due to the immigration of French Huguenots to the Netherlands and then to South Africa.

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Sources:
USAGE
• https://en.wikipedia.org/wiki/Fran%C3%A7ois_Bloemhof
• https://af.wikipedia.org/wiki/Fran%C3%A7ois_Verster
• https://en.wikipedia.org/wiki/Fran%C3%A7ois_Steyn
• https://en.wikipedia.org/wiki/D._F._Malan
• https://en.wikipedia.org/wiki/Francois_Jacobus_du_Toit
• https://en.wikipedia.org/wiki/Thomas_Fran%C3%A7ois_Burgers
• https://en.wikipedia.org/wiki/Frans_Erasmus
• https://en.wikipedia.org/wiki/Tom_Naud%C3%A9
• https://en.wikipedia.org/wiki/Flooi_du_Toit
• https://en.wikipedia.org/wiki/F._S._Malan
• https://forebears.io/forenames/francois

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Explanation
• https://en.wikipedia.org/wiki/Huguenots_in_South_Africa
• https://www.quora.com/Why-do-some-Afrikaners-have-French-first-names-like-Louis-and-Fran%C3%A7ois

François (spelt Francois in America) was given to 20 boys in America in 2015.

François is a very traditional French name that had been consistently popular until a sudden decline in the early 2000's.