Hello Emma
Are you sure your Clara Gavan nee Foxall was born in 1912?
There was a Mrs. Gavan nee Foxall having children in Dudley in 1939, 1941, 1949, and 1953 all in Birmingham.
We coresponded a few years back, I can not find all my notes because I have moved my office, but Clara popped into my mind when I saw your entries on the web site. I am not sure you will remember me.
You do have Clara's marriage to Edward Gavan in 1938 in Birmingham.
There is a Clara Foxall born 2nd quarter 1921 registered in Dudley, Staffordshire, here mother surname is Smith.
The Smith Foxall couple had at least 7 children registered in Dudley between 1917 and 1931.
There was a William Foxall and Elizabeth R. Smith whose marriage was registered 1914 in Dudley.
I can not remember what you were researching years ago other than Clara's death. But it might be easier for a woman born in 1921 to give birth in 1953 than a woman born in 1912.
---Mary Ellen