Hello again Judith,
Getting back to you, as promised, re William John Grey and Margaret Ina Dann.
Since my last post my husband has been fortunate enough to be in email touch with a descendent of one of Margaret Ina's siblings. This descendent has verified all the details of Margaret’s ancestors and they are the same family you identified in your initial reply to my post. So, well done! I take my hat off to your expertise.
The family’s forebears emigrated on assisted passage from Sussex, England about 1830 - so we look forward to many happy hours here searching UK parish records to see how far back we can trace the family line. We have ordered a transcript of the Australian Birth Certificate of Margaret’s paternal grandfather to see what other details we might glean. It is, unfortunately, taking longer to arrive than I had hoped so we are waiting - patiently!
The information we have of William John Grey has also been verified here via a living relative. Thus, we have a fairly comprehensive dossier on William and Margaret to pass on to our children/grandchildren.
With repeated thanks for your interest and help
buona
P.S. A belated Happy New Year to you