1861 Census - Stockport Cheshire, Higher Hillgate, William Sumers, age 5 months, born Stockport, mother Mary age 39 RG9/2566
1871 Census - Stockport Cheshire, Higher Hillgate, William Summer, age 10, born Stockport, mother Mary age 47 RG10/3661
William is not with mother in 1881 Census mother still in Higher Hillgate Stockport.
This census was posted previously and discounted-think it was established that mother Mary was married to Charles 
Suz
The mother Mary did indeed marry Charles.
Mary Mycock married Charles Summers Dec. Quarter 1848 Registration District Stockport
In the 1851 census they are together, Higher Hillgate, Stockport,
All subsequent census for Mary do not have her husband Charles present.
However Mary is having children including a William born about 1860.
Cheshire Birth indexes 1860, SUMMERS, William, Stockport, Mothers Maiden Name MYCOCK
What happened to Charles Summers after 1851?
Did Charles die after 1851 or maybe go away for some reason?
I have not discounted this family just yet.