Hi Forfarian. I have checked the original census, and no John Ross of that age appears on it.
Back in the 1980s, I had an Edinburgh researcher looking for the Duffus/Drainie Ross family, come up with the 1853 birth of John, quoting the Duffus OPR base as a source. When I tried it on SP last week, there was zilch, as was the previously recorded birth of a sibling, Elizabeth Ross, in 1848
I'm beginning to believe that the dob of John was incorrectly copied into the good book, as such data was not always entered in real time, and this was confirmed when I looked up the OPR for John's brother, Peter Ross, (b Drainie 1854), On that page, the last five birth entries were in this order; 1854,1842,1846,1854,1853. I have cross-checked Peter's birth date with his age at marriage, and at least, that one appears to be spot on.
Ta for the input.
Jim