I have Joseph Beaugrand-Champagne m. Angelique Mondor 13 Nov 1832, Lanoraie, Qc.
Joseph Beaugrand-Champagne is the son of Joseph B.-C. (born 26 May 1779) and Marguerite Frichet-Frechette (born 28 Sep 1785) m. 13 Aug 1804, Ste-Genevieve-de-Berthier, Qc. Hope this can help.
If my info is correct, your gggrandfather Joseph Beaugrand-C. is the brother of Genevieve Beaugrand-Champagne who married Jean-Baptiste Jourdain, my gggrandfather, 21 Feb 1827, Berthier, Qc.