I know that MARY ANN went on to Marry WILLIAM HENRY LUKE on 01 OCT 1853 in Castlemain, Victoria. I do not have the certificate so cannot verify that she is a widow, but marrying again so soon after giving birth makes me think that Henry died.
Or the child was Wm's

.
Back to your original request to find the death of Henry
DAVEY.
I wonder who gave the consent or witnessed this marriage...
Father's names were not recorded on South Australian marriage registrations until 1857. It would appear that Henry
may have been alive in Feb 1852.
WILLIAMS John Henry 22 years Status single Father unrecorded
DAVEY Emma 16 years Status single Father unrecorded
13 Feb 1852
At the residence of Mr Davey Reedy Creek Ade 10/46
Cando