John O'Connell (son of Daniel O'Connell and Catherine Cockley) married Marie Lavoie (d.o. Joseph lavoie and Catherine Mongeau). 1 Dec 1851 at Sherrington, Québec, St-Patrice parish.This is located about 15 miles south of Montréal.THe parents of Marie Lavoie were married at St-Philippe de Laprairie 25 Oct 1824.
I cannot find the marriage record of Daniel and Catherine. The latter were likely married abroad.