In October 1787 he married Marie-Madeleine Desestre, who came from a family of Parisian officers, and the couple had four children, Augustin-Louis Cauchy (1789–1857), Alexandre Laurent Cauchy (1792–1857), Eugène François Cauchy (1802–1877) and a daughter.
In October 1787, he wed Marie-Madeleine Desestre, whose family was comprised of Parisian officers, and they had four children: Augustin-Louis Cauchy (1789–1857), Alexandre Laurent Cauchy (1792–1857), Eugène François Cauchy (1802–1877), and a daughter.