Thanks for the clarification regarding the list.
This is all a bit messy as Rebecca re-married shortly after her first husband passed. She married a John Cooper in 1858. She then emigrated to Christchurch NZ around 1880 according to her death certificate. Passed away in 1894 and is buried with her daughter Martha Dunn (nee Sims), Martha's husband Charles Dunn, and their son Joseph Henry Dunn (my great grandfather). Martha and Charles married in Sydney.
Rebecca's death certificate lists both her husbands and places of marriage as Sydney. Indicates her place of birth as Ireland, but not the actual location. Her parents are listed as Robert Irvine and Sarah Noble.
Any help really appreciated as I'm struggling with this one!
WoolleyNZ