As a result of the 1851 discovery of this in New South Wales & Victoria, Australia's population almost tripled by 1860
This 
was granted in 1851, when the Port Phillip district became the colony of Victoria,
... [DOC] [TLE] Colonial Australia - The Gold Rush and Ned Kelly - - Pilot Guides [PAR] Gold was discovered here in August 1851 by John Dunlop and James Regan.