Looking for Hallett Nsw Australia

Eliza Forester born c 1818 Ireland married John Hallett 20 September 1836 Paterson NSW Australia.
lookong for daughter Mary Hallett born 1841 Paterson NSW and baptized 1859 Wollongong NSW, place of marriage and death unknown.
Also what happened to Eliza Hallett after John Hallett died 1859.
Esma Ingram
e mail esmaingram@optusnet.com.au