I have found a John McKee in the 1881 Canadian census. Wife Mary.
Name: John McKee
Gender: Male
Marital Status: Married
Age: 45
Birth Year: 1836
Birthplace: Ireland
Religion: Church of England
Nationality: Irish
Occupation: Laborer
Province: Nova Scotia
District Number: 9
DISTRICT: Halifax City
Sub-District Number: F
Subdistrict: Ward 5
Division: 1
Household Members:
Name Age
John McKee 45
Mary McKee 45
John W. McKee 12
Sarah McKee 7
Thomas McKee 4
Annie F. McKee 1

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