My money is still with the family we found in Abernethy for lots of reasons which we have touched on here and on the deciphering board post. A little summary here of some of the things we have found:
We know that Duncan and Mary's son, Donald and family were living on the High Street Elgin at the right time for Donald to have reported Robert's death there in 1865. This Donald showed as a grocer living in Elgin from at least 1861-63. By 1871 at least, the family had moved away to Inverness.
We know from his death cert. that Donald was the son of Duncan and Mary from Abernethy.
We have Donald's signature from his daughter's birth cert in 1863 and also (I think) a matching signature for Robert's death in 1865 for 'Uncle Donald'.
The Abernethy family has a Robert Cameron, in the right age group, showing in the household in both 1841 and 1851. There is also a suitable corresponding entry for a Robert Cameron, with an Abernethy birth place and the occupation of ploughman, on the 1861 census.
I think one confirmation that might help to link everything up would be to find a Donald Cameron, grocer, living at 222 High Street in 1865. Valuation rolls, as discussed, would help with this if someone could help there with a look up....
We have a potential marriage for Duncan and Mary from Abernethy in 1814. We know that Duncan's father was called Peter. It would fit that he would call his first born son Peter, likely born between 1814-21. We pick up on their children with Donald's entry from 1822. Often happens that pre 1855, you have gaps on the registers for lots of reasons (if you are lucky to find anything at all!). Given we cannot see a Peter, mason, in 1841 that fits for this family, he could have died potentially before this year?
All suppositions really at this stage. Hard fact is just the details we have so far on that 1865 death cert.
Monica