Request for Help with Ancestry

I am the daughter of Roy Woodcock who died in Rochdale in 2012. My father did not tell me anything about his family but following his death I have undertaken some preliminary ancestry searches and I believe the family may have "originated " in Tarvin.

His father was John Woodcock born 1898

Johns father was Robert born 1868 (brother of Frederick who died in 1914)

Roberts father was John b 1837

Johns father was Joseph b 1795

and his father was Ralph b 1771??

I wonder whether there is anybody who has undertaken similar searches who may be able to confirm (or otherwise) my data and if possible provident any background information/pictures?