I am coming really late to this party! I have a subscription to PRDH and according to their transcription of the marriage record, Charles Denis-Lapierre married Marie Louise Fradet (b. 26 Sep 1722, St-Vallier) on 24 Nov 1749 in St-Vallier. The parents of Charles are Charles Denis and Marie Madeleine Pichet. The parents of Marie Louise are Jean Fradet and Marie Madeleine Gosselin. Witnesses were Jean Rolain (Charles' brother-in-law or step-brother), and Marie Louise's brothers, Jacques and Augustin Fradet. Marie Louise had a sister named Louise Genevieve (b. 21 Feb 1724, St-Vallier), but PRDH shows no marriage for her.