 In 1818, he married Marie-Louise Félix from the village of Saint-Benoît.He resigned his position in the militia after a number of his friends were dismissed as militia officers because of their association with the Patriotes.Girouard was elected to the Legislative Assembly of Lower Canada for Deux-Montagnes in an 1831 by-election held after the death of Jacques Labrie and supported Louis-Joseph Papineau in the assembly.