Hi Beth,
Do you know anything else about your George Rogers? Perhaps his parents names, or where/when he was born/married/died? or if any children?
Some thoughts:
Have you compared his 1869 signature with his 1891 signature (on the probate packet records) to confirm he was same person?
Who was William Hurst related to? (does the probate packet show this, the index only shows John Hurst Date of death 1 June 1869, Granted on 13 July 1869, and does not mention it was reopened and resealed in 1891)
Some scant info on various George Rogers:
From Sands Directories Sydney 1867
George Rogers, baker at 406 Macquarie St, South
George Rogers, tailor at 25 Parramatta St
Sands 1869
George Rogers, Grose St Glebe
George Rogers, 406 Macquarie St South
George Rogers, tailor, Boundary St Waterloo
Sands 1871
George Rogers, tailor, 25 Parramatta St
Sands 1873
George Rogers, 404 Macquarie St South (yes, 404 !)
George Rogers, grocer, Cooper St
G Rogers, draper and hatter, 39 Parramatta St
Sands 1877
George Rogers, Missenden Road, Camperdown
George Rogers, 2 O'Briens Lane
So there's not a long list of candidates for your chap

Cheers, JM