Seeking Info Mary Dow Nee Foy

Hi all,
i am seeking info about my 3 x great grandmother; Mary DOW ( nee FOY ),
all i know is she md Donald DOW,
and they had a son ; donald / dogild, DOW, ( 1860 - 1924 )

i know they were in Australia, but i dont know what other country too look in,

from bindi