Thank you Kirsty,
It looks like that this is the only death recorded for William Anderson, although his birth is out by 5 years with two census dates. I realise that the Census can be out, but I wasn't expecting it to be out twice.
I thought that William Anderson might have died elsewhere, that's why I posted the help! That baptism date is also the only one for Duffus, with one sister Helen. Witnesses to his marriage to Janet McPherson records Alexander Anderson farm servant in Alves, and Margaret Anderson in Duffus, so the latter witness may have been his mother.
Thank you again Kirsty.
Keith