Hello everyone and thanks for all your replies.
Thank you for checking the complete index for me, and I thought it strange when I found the ones on freebmd all registered in June, must be the month.

I have also checked on freebmd for births registered at Aston, I didn't find any but am not able to check the completed index so if anybody can have a look it would be appreciated, but saying that Daisy Loo may have mentioned if there had been any in Aston.
I can't agree more Birmingham Register Office are extremely helpful, I have let them know of 2 details that I would hope to find on a birth certificate and they will only issue it if these details are on the record. I will post on here the outcome possibly late next week.
I have looked at baptisms Nanny Jan and the person that has come nearest to my great granddad's dad appears not to have baptised the boy with the full 3 names that I have documentation on already. I know people call themselves different names after baptisms and some have said on here that there are instances where their ancestors have dropped middle names after baptsim but this one of mine seems to have added one! So, unfortunately I just cannot confirm whether the baptism is he or not.
We'll wait and see I suppose. There is the problem that I cannot find his father on the 1841 census, so possibly the name is badly transcribed or the father died prior to the census, and I don't know what his mother's name was.
Ewan