The first clipping listed the graves as unknown and the second four days later reported the graves owners as Emanuelson's (workers) from Cuppacumbalong. The articles have also sparked an interest in me to discover more about the cemetery at Tharwa (heritage register pdf).
The Canberra Times - 7 February 1939
The Canberra Times - 11 February 1939
Update: 30/06/11 There is a part two to this saga - Pioneer' graves - Nass Bridge 2