Time frame and location would help narrow down the search.
Time frame would be birth, marriage and or death year if you have them.
Location would be country, state or province, county and or city.
There are 92 Lirtherland's at Wikitree, but no Corbett, Cox, or Redfern.
If you can provide some guidance on Corbett, Cox and Redfern, then that will provide a foothold for researching some answers.