this a complete stab in the dark
on the wills found by Cupoflife there is a daughter named Eliza (maybe named after a grandmother)
I have been looking FAG SA Cemeteries, there is a grave at Cheltenham Cemetery for
Eliza Howard
Birth unknown Death 1 Oct 1905 Burial Cheltenham Cemetery
Cheltenham, City of Charles Sturt, South Australia, Australia Plot H
in the same Cemetery in same plot
William Howard
Birth unknown Death 1 Oct 1885
Burial Cheltenham Cemetery
Cheltenham, City of Charles Sturt, South Australia, Australia Plot H
As I said a complete stab in the dark. but maybe Thomas parents
cass