Do you have Margaret & Sidneys marriage certificate. Your other post will need details from it to track Sidney back and we will need details for Margaret on here.
Margaret was born after the 1911 census so we will need details of both parents to take this backwards
Margaret Hartley 27 years 12 Greenwood Avenue, Beverley Father William Henry Hartley (deceased) Occupation Carter.
Married 10 December 1938
There is no space for Mothers name on certificate
Mothers name on Birth certificate is Anne (or Annie) Eliza Hartley formerly Hamlet
Thanks
David