Paul Selwood

[bearkat]

Sometimes illegitimate children were given their father's name as a middle name.

I have checked birth registrations for about that time without success.

[pjm99]

If the family are not going to co-operate then I think you are on a loser.
Peter

[RSnelling]

I am not one to give up that easily. I have worked on this for a long time now just for it to end. I knew when I posted it I might have been trying to find a needle in a haystack.

[lizdb]

But with no name to work on, I don't know how you are even going to get started!

Allegedly a woman said she was pregnant approx. 1945/46.

We don't know her name
We don't know if she had the baby
If so we don't know if the baby lived
We don't know where the baby was born, or when.
Or the baby's sex or name.
Even if she had had the baby, and it had lived, there will be no record of its father (if he wasn't married to the mother and had died, he could not have been there to register it) so there will be no way of knowing you have found the right child even if by some means you did happen upon it!

Sorry, but just how are you hoping this will be resolved?
The only way I can see to move it on at all, is for you to have access to the letter, and see the name of the woman, and hopefully a date it was written and hopefully she put her address at the top for a reply!