I found three pages for Bonnys Yard in the 1871 census. If you do a search for RG10; Piece 943; Folio 97; Page 34, it will take you to the first page.
I think the ages are 'out' on the 1891 census, by at least a couple of years - when I found Lizzie (as Eliza E) in 1901 she gave a yob 1871, which ties in with her death reg in 1916 as age 45. I think Hannah/Anna was probably born c1852