Thanks everyone for taking the time to help me out, I am following the strings with great interest, thanks for your help.
The two brothers names, Joseph and Albert are actually correct, whether they are the same two that are in Coleshill I'm not sure but it does seem likely.
I have actually spent the last eight or nine years on this tree and this is by far the hardest part of the search. I have hundreds of pieces of primary documentation from India, South Africa (where Bertie was born), Australia and New Zealand but dear old Birmingham ......nightmare.
Thanks again
Keith