People Canada John Mercer Johnson peoplepill id: john-mercer-johnsonJMJ 1 views today 18 views this weekCanadian politicianJohn Mercer JohnsonBiographyListsAlso ViewedListsJohn Mercer Johnson is in following listsBy field of workNotable Canadian politiciansGender:Male, Born in:Years 1800 to 1849By work and/or countryNotable Canadian PoliticiansGender:Male, Born in:Years 1800 to 1849From our partnersSponsoredJohn Mercer Johnson