 He proceeded to Adelaide, South Australia, arriving there on 21 April 1837.Jeffcott became a close friend and advisor to the embattled Governor of South Australia, John Hindmarsh, and helped to smooth tensions between the Governor and his officers.As well as Judge, Jeffcott was also a member of the South Australian Legislative Council from 28 December 1836 to 12 December 1837) the source of both executive and legislative power in the colony.