Hi again...
"Time in the colony" is often (but not always) mentioned when applying to be naturalised. It's as accurate as you're going to get short of a passenger list.
I've also seen applications which list the date, ship and port of arrival... and others which haven't :-)
Just keep hanging out for someone to answer your Wellington Archives lookup request and keep your fingers crossed.
---
yayyyy Thanks Ian and Beg
Thanks Linda but it was 100% down to Ian.
I'd already looked at those pages and totally missed the entries.... grrrrrrrr :-(
Regards
Beg