My mother, Gladys Maud, was born in 1922, she also had a full brother Leonard Benjamin. I do not believe she knew her parents but did spend a lot of time trying to trace them and she found out a little about them.
This is what I can remember she told me:
Her parents were not married Her father was much older than her mother. Her Mother was Irish (red haired) She had an Uncle Sydney (or Sidney) She had a half brother George who was about 25-30 years older than her. Her half brother had a daughter about my mothers age, as I remember the daughters name began with an 'S' (Sylvia? Sheila?..??)
I now have her Birth Certificate which gives her parents names as George Benjamin Thew and Agnes Thew (Formerly Smith)
The only Sydney I can find is in a family with Charles William as his father in the 1891 Census. If that is the 'Uncle' then he must be, at best, a great Uncle.
George Benjamin's Father was George Thomas, Wife Eliza formerly Bevis (from his birth Certificate).
From 1881 Census George Thomas was born around 1848, Eliza around 1849. They had at least 4 Children, Thomas, Eliza George B and Alfred. I have found a reference to an Alfred Sidney Thew born around the right time ca 1879. It may be that he is Uncle Sid.
That so far is all I have been able to find out any information or tips to help me progress either back in time or forwards would be appreciated.