Well, this had to be my ancestor, but I'm trying to work out how old he would have been. I thought he was born around 1869, so something is wrong somewhere. The 1881 census has him age 12.
I got the Slough info from the following:
J.G. Harrod & Co.'s Royal County Directory of Bedfordshire, Buckinghamshire, Berkshire, Oxfordshire, Huntingdonshire, and Northamptonshire. [1876]