Hi, Possible marriage of son William?
1864 57/185 William HUMPHRIES = Ellen JEFFERY
and birth of grandson
1867 54/364 HUMPHRIES William John Father William HUMPHRIES Mother Helen JEFFREY at Nairne
BUT.. Williams death has nothing.
1881 112/342 William HUMPHRIES
According to Trove the notice of his death gives no family information either. Just that he was a colonist of 44 years and he was 69 years of age and died from paralysis. (stroke possibly).

Some more thinking needed.

Possibly their immigration file

There is one Notice of a William Humphries arriving Dec 1st 1852 by what looks like a coastal steamer in Adelaide on the same ship a Lady with 5 children, no name.
Neil

Neil