John Simeon Peacock was born 15 December 1852 in Hartley, New South Wales, Australia to George Treggus Peacock (1805-1874) and Sophia Morris (1812-1889) and died 14 October 1911 Coonamble, New South Wales, Australia of unspecified causes. He married Reubena Lees (1858-1943) 1877 in Coonamble, New South Wales, Australia.
|Henry Alfred Peacock (c1878-c1878)|
|Henry Edgar Peacock (c1880-?)|
|Charles W Peacock (c1882-?)|
|Sophia Muriel Peacock (c1884-1967)|
|John Clarence Peacock (1886-1970)|
|Louisa M Peacock (c1888-?)|
|William S Peacock (c1890-?)|