I have just found a couple of records which state that Christopher ALLCHIN and his twin brother, Henry Stephenson ALLCHIN, b 1863 in Finchley, Middlesex, were living in Queensland sometime after 1881.
Henry died in 1925 and I am not sure what happened to Chris, but he married Emily Pine BROWN in 1892, QLD.
Chris must have worked on the railways, as I found a record stating he earned 6 shillings per day in 1893 and joined in Aug 1892.
I would love to find out more as their cousin, Christopher Thomas JONES came out to Australia - marrying in VIC, but may also have moved to QLD as I found a Chris JONES marrying in QLD to a Bridget O'Flaherty in 1891 ( I am hoping this Chris is the son of Chris in VIC !)
If anyone has census records or other BDM records they could check, I would be most grateful.