It’s John Aldred, Coal merchant. Not John Alfred.
First mention I can see in papers is 1888. - an occasional worker took his horse to the vet as requested, then walked it to Miles Platting where he tried to sell it fo £15 and ended up selling it for 25 shillings.
57a Ordsall Lane, Salford in the 1920s
If you search by employer “John Aldred” in 1921 you can get quite a list of workers
Added, John Aldred on a Jury Salford Assizes in 1880 (coal merchant Litte Hulton)