Places   (Help with places, streets and buildings in Wigan.)

Hi everyone I'm asking for info if anyone has it please .I'm looking for info on my step grandads family from Kitt Green .My grandad was called John Johnson , my dad remembers living in Kitt Green in the late 60s with his step dad John ,mum Dorothy and Johns mum . He said the house was near open fields but this was the front of the house. My dad only lived there for a few months before they moved. I'm not sure if Johns mum was married but i know john had a sister Margaret , and she had a daughter also Margaret who was special needs but she still worked . Ive been looking for years for him on the 1939 register but i have no idea of his mums name or the address they may of lived in in Kitt Green .My granddad worked at Heinz