Diana - We know that our antecedent was a Thomas Heaven from Stroud, Gloucestershire UK.If your family has any Australian connections S Australia has quite a few as does Western Australia.
My cousin has traced the family quite well from Thomas but had trouble going further back.
A MichaelHeaven (Gloucestershire) has told me that if we are connected to a Heaven of Lundy island he has a quite extensive family history.There has been some talk over the years but I cannot confirm it.
Bill Heaven Sth Australia. PS The family has quite a few Williams and Michaels.