When was James Dilley born?
Can you tell us your interest in her - are you descended from her son or one of her siblings?
Have you looked for her on the 1921 census?
My husband is the grandson of Sidney Dilley. Sid married Elsie Eaton in 1935 but there is a family legend that another woman turned up at his funeral.
Our Sid effectively disappears after the 1911 census and turns up again on the various electoral registers for Islington in the 1930's. I can't find him on the 1921 census at all.
It's possible that the Sidney Dilley in the late 1929's at the same address as Sarah Ellen is my husband's grandfather but I can't find out how Sarah Ellen is connected to this Sid.
Amended to read: James Dilley was, according to the 1939 census, born on 23 Apr 1920