Image is of Ann's Baptism.

You have made a mistake with Ralph's wife in the 1851 census. She is on the same page with the children, her maiden name was Lancashire.( See http://www.cheshirebmd.org.uk/index.php for details of her children)

Cheapside, Hyde, Cheshire, England

Ralph Surtees Head Married Male 39 1812 Callico Printer Heaton Norris, Lancashire, England
Betty Surtees Wife Married Female 42 1809 Power Loom Weaver Middleton, Lancashire, England
Isabella Surtees Daughter Unmarried Female 16 1835 Power Loom Weaver Hyde, Cheshire, England
Ann Surtees Daughter Unmarried Female 17 1834 Power Loom Weaver Hyde, Cheshire, England
Elizabeth Surtees Daughter Unmarried Female 11 1840 Errand Girl Hyde, Cheshire, England
Alice Surtees Daughter Unmarried Female 8 1843 Scholar Hyde, Cheshire, England
Jane Surtees Daughter Unmarried Female 4 1847 Scholar Hyde, Cheshire, England
Ralph Surtees Son - Male 0 1851 - Hyde, Cheshire, England.