Many thanks Jim for all the helpful information which I will follow up.
Andrew was born abt 1831 in Hamilton Lanarkshire to James Renwick and Margaret Gage.
1851 he was living in Glasgow with his parents and siblings. So he must have made his way to Australia between 1851 and 1853. I know this because his parents have his death inscripted on a Headstone at the family grave in Hamilton Old Parish Church, Lanarkshire.
Regards
Moira