On December 29, 1790 Desmoulins married Lucile Duplessis. Among the witnesses to the marriage were Robespierre, Brissot, Jérôme Pétion de Villeneuve. The Desmoulins' only child, Horace Camille, was born on July 6, 1792; his godfather was Robespierre.
Lucile Desmoulins was arrested mere days after her husband, and condemned to the guillotine on charges of conspiring to free her husband from prison and plotting the "ruin of the Republic." He was executed on April 5th 1974 and she on April 13, 1794.
Horace Camille Desmoulins was raised by Adèle and Annette Duplessis (the sister and mother of Lucile, respectively). He was later pensioned by the French government, and died in 1825 in Haiti.