Thanks Kite. I'll hold off from upgrading just yet!
I have messaged the owner of this particular tree - she says she likes to help other researchers so shows promise
I'm hoping the William above is related to my 5 x gt grandfather whose place of origin is totally unknown.
I also have matches with a lot of US researchers whose trees go back to when their ancestors arrived in America in the 1700s but no clue where they come from and I don't recognise any names! I have no idea where to start with those....