Ok Thanks for that.
I was taking it literally that they had no records prior to 1855.
Just been looking up the meaning of the village Achlunachan (gluineach, kneed, jointed, applied to grasses with jointed stalks ; Field of the jointed grass.
Looking at the 1851 census it is quite clear that there is a family inter-relationship between at least 3 of the 4 houses in the village.
It would have also been this family relationship that allowed the 2 boys to leave the mother there and depart to America and Australia.
The three brothers from the previous generation (I think) Alexander, Donald, & Murdoch are very interesting. My father is Duncan, Grandfather Donald Murdoch Alexander, G/grandfather Alexander Murdoch - Also an brother to g/gfthr called Duncan in Aust.
That the Murdoch in Scotland also went to Victoria in Australia is also of much interest. have talked to the Aussie relatives over the weekend and we believe that there was no contact between Alexander and subsequent family and what was probably his uncle even though they were in the same state. I guess it was possible that they did not know where each other was.
I will keep progress posted
Regards
Stuart