I'm seeking any information about the following people -

Miss Mary Dunne (b.1815-Co. Kildare,Ireland)
sp: Mr William Fullerton (b.1817-Co. Kildare,Ireland)
moved to Victoria, Australia - family known

I'd like to know who Mary's and William's families were...does anyone have any information that could relate to this family?
Thanks,
A. O'Brien, Australia