I hope I can provide some help for you.
You may already have seen their family tree. If not then go to: www.gatenby.freeserve.co.uk
Family Trees to Lancashire to Manchester1.
Those children you mention are there and a couple more.
Anyway what info I have is limited as this Gatenby family is not from my own line.
I do have the census pages so please ask if you want copies sent.
My email email@example.com