Hello
Do you think that there are two William Skews in 1851? Is it possible to be in Waterloo and be listed as a confectioner?
No it's fine. The Battle of Waterloo was 1815, so he fought there, lost his arm, returned home and was a confectioner in 1851.
From the piece you found: "In one house, now no. 10, lived William Skews, confectioner, and a Waterloo veteran who had lost an arm in that battle. " So it's the same man.