God save the queen is of French origin

The French Marquise de Créquy wrote in her Souvenirs that a song named "Grand Dieu, sauvez le Roi!" ("Great God, save the King"), with words by Marie de Brinon [fr] and music by Jean-Baptiste Lully,^[10] was performed in gratitude for the survival by Louis XIV of an anal fistula operation. (The surgical knife purpose-made for the occasion is on display in the Musée d'histoire de la médecine.^[11]) Créquy claimed that the tune was later plagiarised by Handel, and so adopted by the British as "un de leurs air nationaux". (The entire story might have been intended as a joke.) After the Battle of Culloden, the Hanover dynasty supposedly adopted this melody as the British anthem. A different song, "Domine, Salvum Fac Regem" ("Lord, save the King"), was the unofficial French anthem until 1792

https://en.wikipedia.org/wiki/God_Save_the_Queen#History
Yesterday, at the polyglot café in Lille while I was at the Spanish table, a participant told me (in Spanish) of course and with a lot of application the story of King Louis XIV's fistula which gave birth to the English national anthem: God save the queen(king). I let you discover it in the English language