And (having now looked at the PR) Mary was shown as aged 18, and her father was a cabman - so a possible for her in 1861:
Lomas Buildings, Castleton, Rochdale - RG9/3038 fo105 p17
Mary Howard aged 12, with parents Thomas (35, Cab Proprietor) and Sarah (34) - all born Rochdale. (No-one else shown in household.)
Added: yes, the one I saw in 1871 was the one in Stephen Street.
Lomas Buildings, Castleton, Rochdale - RG9/3038 fo105 p17
Mary Howard aged 12, with parents Thomas (35, Cab Proprietor) and Sarah (34) - all born Rochdale. (No-one else shown in household.)
Added: yes, the one I saw in 1871 was the one in Stephen Street.