I have linked in the North/ Northe/ Northy clan that settled in Napier back to my distant forebears from Chasewater, Kea, Kenwyn area. It seems the earliest NZ Northey migrating was John Northey via Parramatta Australia in early 1800s. He and his offspring used every spelling possible, or was it the registrars in NZ at the time? And yes a couple of generations later, the same extended family had 4 brothers Northey from Cornwall settle in Ballarat gold mining area in the 1850s. From there some offspring went to Hindmarsh, Adelaide and Balmain, Sydney areas. The next generation (my grandfather) finding his way to NZ in 1916 a hundred years after John.
Another branch of Northeys arrived in Christchurch in mid 1800s, and I'm keen to find how they are connected in. I am very happy to discuss further with any extended family.