Thank you all so far and I think Maggie is close, I have further information, have managed to dig out birth and marriage certificates with proper names and dates.
I have manage locate my grandmothers birth certificate, Violet dated 14th July 1903, District of Trombridge (I think difficult to read) sub district of Kingswinford, the interesting thing is her parents are named as John Thomas Stevens and a Sarah Ann Stevens formerly Thomas, note from comments above.
Anecdotal evidence suggests grandmother Violet came up from Birmingham as a young girl around 1917, we know her father John above had a accident which made him mentally unstable possibly he died and this prompted the move.
Given the evidence kindly provided in the posts and the birth certificate I think my grandmother Violet AND her mother Sarah Ann moved up from Birmingham probably after my great grandfather John died, could do with finding out when he died.
Great Grandmother then met and married Joseph Frederick Horrocks and this marriage resulted in Mabel being born in 1911, this makes Violet my grandmother being Mabel half sister, which my father has said all along! For once seems to have been right!
Violet married my grandfather Richard Moore on September 20 1924, the registrar has spelt the name on the certificate Stephens but my grandmother has signed it Stevens, this has been the source of some confusion in the posts. Is definitely Stevens.
Mabel married Albert Simpson in 1931 and their daughter Thelma was born about 1933 in Manchester. I think this makes my Father and Thelma cousins or half cousins?
To prove this I think we need copy of Mabel's birth certificate and marriage certificate and Sarah Ann marriage, death certificate, would also need John death certificate.
Can anyone point me in the direction of where to obtain these and suggest what else might need?
Thank you all for your help.
