Lanaudière returned to France with his regiment in 1760 but came back to Quebec in 1768. The following year, he married Geneviève-Élisabeth, the daughter of Luc de La Corne.
In 1760, Lanaudière went back to France with his regiment; however, he returned to Quebec in 1768. That same year, he married Geneviève-Élisabeth, the daughter of Luc de La Corne.