At the time of the 1851 England Census George Mansbridge, aged 13, born in Portsea Hants, errand boy, was with his parents at 7 Cottage Place, St. George Bloomsbury Middlesex.
There is no record of George having married or died in England and he does not appear in the Censuses after 1851. A George Mansbridge died in Heathcote Victoria Australia in 1926 aged 89 years (born about 1837). If this was him then he emigrated to Australia by 1865 in which year he married in the State of Victoria to Annie McKay.