Did some further checking.
Looks like we are 2nd cousins, once removed.
I have the Family Bible of Harry Clark/Frances Ann (n.Barlow). It includes some handwritten family tree info, and there are some newspaper notices re the death of Harry's father, Henry. I also have some info re Henry's grave location in Melbourne General Cemetery.
Also located Death Certificates for both Henry & Eliza, photo of their grave headstone and "Right of Burial" issued for Henry's burial to his eldest son Edward Joseph.