Looking for James and Grace Goldsworthy

Hi

I am trying to find any informaiton I can on both James and Grace. What I know so far
1941 Census
Grace Goldsworthy living in Cornwall
Daughter Elizabeth born around 1830 (not cornwall)
Daughter Mary Jane born Cornwall
Daughter Maria Emma
There is no mention of James so maybe he died prior to this census.
The 3 daughters all emigrated to Australia in 1848 on the Westminster to South Australia
Elizabeth married John Betts of England in South Australia in 1851. I also have no idea of Johns ancestry.

Thanks to anyone who can help

Kerryn (Australia)