Hi Essnell,
The Bainbridge family lived at Pullenvale which is not far from Ipswich. They were quite a known family, many descendants. I think some of the old graves might still be out that way. I just moved back to Ipswich after living up further north in Qld, so one weekend I may do a trip and see for myself.
The Henderson's are everywhere, there is a reunion being planned for all the descendants of the original immigrants to Australia, the ones that were sponsored by my grandparents and great grandparent's.
And yes totally cool with the birth certificate,i am completely unfamiliar with USA and the process there. I have spent many years looking into my german side so now it's past time I turned my attention to the Scots lol.
harry was in Australia during WW2,possibly after...relying on my mum's memory there as to when.