1901 census has dates of birth slighlty different to yours?
Reference RG13, Piece 3315, Folio 9, Page 9
Walker Lane, Macclesfield, Cheshire
Kenna, William Head M 36 County Police Constable b Seacombe, Cheshire
Kenna, Hannah Wife F 35 b Liverpool, Lancashire
Kenna, Hannah Daughter F 13 b Wilmslow, Cheshire
Kenna, William H Son M 12 b Wilmslow
Kenna, Margaret J Daughter F 10 b Wilmslow
Kenna, Elsie Daughter F 8 b Wilmslow
Kenna, George Son M 8 b Wilmslow