Some of the details here are currently based on simply the summary marriage information sourced from NSW BDM, plus the minimal information on FamilySearch. Please exercise caution before relying on anything currently shown.
One FamilySearch profile indicates that John was christened 3 February 1819 in Glasgow, Scotland, to parents James Turner (1793 - ) and Margaret née Stewart (1797 - ). This is unsourced and conflicts with the current unsourced detail on his wife's profile that his parents are James Turner and Margaret McKenzie.
Yet another unsourced FamilySearch profile appears to suggest that he was born in NSW around 1841.
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Featured National Park champion connections: John is 19 degrees from Theodore Roosevelt, 18 degrees from Stephanus Johannes Paulus Kruger, 20 degrees from George Catlin, 17 degrees from Marjory Douglas, 27 degrees from Sueko Embrey, 16 degrees from George Grinnell, 24 degrees from Anton Kröller, 21 degrees from Stephen Mather, 15 degrees from Kara McKean, 22 degrees from John Muir, 16 degrees from Victoria Hanover and 31 degrees from Charles Young on our single family tree. Login to find your connection.