Dr. Josette T. Biyo (née Talamera) is a Filipino educator and former executive director of the Philippine Science High School System. She has received international recognition for her contributions to science and education.
Josette Manin is a French politician on the island of Martinique. She was the last President of the General Council of Martinique, from 31 March 2011 to 31 December 2015, and was the representative of Martinique's 1st constituency in the National Assembly from 2017 to 2022. She was the first woman to be elected President of the General Council and as a deputy for Martinique in the French National Assembly.
Josette "Josie" Saltzman is a character portrayed by actress Kaylee Bryant in the Vampire Diaries (where she first appeared played by actress Lily Rose Smith) and The Originals spin off Legacies.
I know a French lady named Josette. She told me that her understanding is that her name is a diminutive of "Josephine", once a very popular name in France (Napoleon's empress).
Josette may also find its origins in the name Cosette, from Victor Hugo's "Les Miserables", as a sort of play on words. If one accepts the idea that Cosette is derived from Chosette, it's rather easy to see the leap from Chosette (shoh-zet) to Josette (zhoh-zet). The "play on words" comes in if you imagine combining the "jo" of Josephine with the "-osette" of Cosette, effectively marrying one image of the French feminine ideal (quiet regal strength) with another (vulnerable innocence).