This looks like a possibility for Wm Parker in the 1852 CA census.
35 Parker, Columbus G.W. Shoemaker United States No Religion 28 M
36 Parker, Nancy J. Upper Canada F No Religion 27 F
37 Parker, Amanda A. Upper Canada F No Religion 6 F
38 Parker, William W. Upper Canada F No Religion 4 M
1852 / Canada West / Haldimand (county) / 106 Canboro township / p. 12d, 13a, (25)

1881 census.
Clumbus G. W. PARKER Self M Male W 55 NY Retail Grocery Dry Goods NY NY
Nancy J. PARKER Wife M Female W 55 CANADA Keeping House CAN NJ
Gorge W. PARKER Son S Male W 18 CANADA Farmer NY CAN
Mary E. PARKER Dau S Female W 15 CANADA Keeping House NY CANADA


Source Information:

Census Place Grant, Huron, Michigan
Family History Library Film 1254582
NA Film Number T9-0582
Page Number 25A
Clumbus G. W. PARKER Self M Male W 55 NY Retail Grocery Dry Goods NY NY
Nancy J. PARKER Wife M Female W 55 CANADA Keeping House CAN NJ
Gorge W. PARKER Son S Male W 18 CANADA Farmer NY CAN
Mary E. PARKER Dau S Female W 15 CANADA Keeping House NY CANADA

Source Information
Census Place Grant, Huron, Michigan
Family History Library Film 1254582
NA Film Number T9-0582
Page Number 25A