Jean's marriage is on page 49; Joseph's marriage is on page 50.
I missed this earlier, on page 49:
Joseph CARTIER (Louis & Jeanne POTVIN) m. Francoise GINGRAS ("J.-Frs." & Francoise HEBERT) on 5 Feb. 1787 at St-Michel.
This book indicates that the same Joseph CARTIER married Anne MARTIN, widow of Pierre PARENT, on 9 Feb. 1826 at St-Michel d'Yamaska.
On page 51:
Louis CARTIER (Francois & Louise CHAPDELAINE) m. Jeanne POITVIN (Michel & Marie PROVOST) on 9 Jan. 1764 at St-Michel d'Yamaska.
Louis CARTIER then married on 10 (18?) Feb. 1777, Marie THEROUX (Joseph & Agathe PARENTEAU).
Louis CARTIER married 3rd, Anne CHAPEDELAINE, widow of Joseph THEROUX, on 21 April 1817.
From Société de Généalogie Les Patriotes Inc.,
http://www.rootsweb.com/~qcrichel/DEFAULT.HTM :
Francois CARTIER (Guillaume & Marie-Etiennette GARNIER) m. 13 Aug 1736 at St-Francois-du-lac, Yamaska, Marie-Louise CHAPDELAINE (Andre & Marie-Anne CHEVREFILS.
(We connect at Guillaume & Marie-Etiennette.... : )
Regards,
Shari Strahan
Massachusetts, USA