Details are as follows,
Andrew Pollack Pressley, 37 yr old d.o.d. 25/05/1911 SOUTH FREMANTLE
MERCY LLOYD PRESSLEY 72 yr old d.o.d. 15/03/1952 SOUTH FREMANTLE
PRESSLEY DAVID JOHNSTON 6 yr old d.o.d. 08/05/1939 GOSNELLS
Just a thought here about these three, Andrew and Mercy were both of a similar birth date, so possibly could have been man and wife, now if mercy remarried and had a child that would explain the different surname and also being given the first husbands surname as a christian name. But it still doesn't explain where george fits in.
Denn