Louis-Camus Destouches (1668 – 11 March 1726), usually called Destouches-Canon, was an artillery General in the French Royal Army.
From an affair with his mistress Claudine Guérin de Tencin, Destouches fathered a child in 1717.
In later life, this son would become famous as Jean le Rond d'Alembert, mathematician, philosophe, and co-editor of the Encyclopédie.
At first, the child was abandoned to the Church by its mother, but Destouches arranged to have him raised privately by a family of the artisanal class.
[2] Destouches then secretly funded his illegitimate son's education, and when he died in Paris in 1726, he left d'Alembert a healthy income of 1,200 livres a year.