Hi Macarthur
George Elphinstone Job was also my great grandfather but I do not know a great deal about him either. But I would love to obtain a copy of the photo you mention as I have not been able to unearth any at all.
I do know he was at one time a publican in Forbes and was declared insolvent in 1872 from a notice in the Maitland Mercury. His father Charles Job was a tailor.