Electoral rolls show:
1924, 1931, 1936
James Murray (merchant) and Hilda Frances, (home duties) PITTENDRIGH
795 Malvern Rd, Toorak Vic
1943
James Murray (merchant) PITTENDRIGH at 5 St Georges Rd, Toorak
also in Toorak at 1 Grange Rd, Robert Henry (BA COMM) and Denise Elizabeth PITTENDRIGH
1949
James Murray (coy director) PITTENDRIGH also Olive May PITTENDRIGH
519a South Head Rd, Edgecliffe NSW
I can't see them after 1949.
This is the marriage for James and Olive:
1947 James Murray PITTENDRIGH = Olive May LLOYD at MANLY Reg no: 14830
Can't see a death for either in NSW (to 1979) although there is this death
1979 John PITTENDRIGH, parents John and Eva Rosa Reg No 622
Judith
You can see some of the residences on Googlemaps - if you click on the red teardrop thingy you can see a street view.