Found the grave in Kew/Booroondara: Benjamin Adams, Sarah (Eyre) Adams, Ozley Adams, Edward Adams
I recently searched the Booroondara (Kew) Cemetery records and found the grave records for Benjamin (d 1869) and Sarah (d 1878) Adams, along with 2 of their sons Ozley (d 1871) and Edward (d 1868), Church of England Section B, grave # 148.
The dates correspond to the BDM Victoria dates of the Benjamin and Sarah Adams death. They arrived together on the ship "England" at Port Phillip from Liverpool in July 1841, they were originally from Doncaster area of Yorkshire. Also the name Ozley is unique to that family, one of the grandchildren of Ben and Sarah was called George Ozley Adams.