Looking for Parents of Frederick William Comyns and Wife Rhonda Crowe

I am trying to research my family history and I have gotten so far back as the marriage of Frederick William Comyns and Rhonda Crowe on September 9th 1869, St James, Waimakariri, Canterbury, New Zealand.
And I am looking for further information about their parents and history. To get a further sense of my own background.

Any information would be very helpful.
Thank you.