Thank you for your email and information. Until this last month I have done very little research on this family and had forgotten about my posting until I got another response.
What is your descendency to Eliza Kinvig ? I take it you are not in NZ.
I found a website listing Catherine and children on the Otari. George was a jeweller in Nelson, NZ. I have also checked where I got the 1881 immigration year from. On Catherine's death cert, the no of yrs in NZ indicate 1881, but since I posted this I have got George's death cert, and no of yrs in NZ indicates 1879. I also know that the given details are not always right.