My Aunty did mention something about Adam's brother Robert coming to Australia,she seems to think he came to Adelaide and ran a shoe shop.
What information do you have about robert and i will check the Australian Records, all states.
I am pretty sure that i am on the right track.
I have ordered Adam's marriage cert to Christina Jaffray to confirm that John & Isabella are his parents, once i confirm that i will be willing to swap the information i have on Adam's descendents for your family lines for Henry & George.
As for the weather here in Australia, it is sunny but a little cold,but i can only speak for South Australia.