yes porirua is split into 5 zones from a geographic point of view and if you want to go from that viewpoint then yes the wilsons and churches and ramaekers are from porirua, but get in the real world my friend - the world where "Porirua" is split into 6 zones.
The East (Mungavin Ave to where Bedford St starts)
The Creek (Warspite Ave until Corrina St)
Waitangirua (Corrina St to Tairangi School Roundabout)
Ascot Park (Tairangi School Roundabout to past Aotea College)
Elsdon
Titahi Bay (Quote
Don't let the new residence of Aotea know you have included
them in Ascot Park, they will put a contract out on your
life.

,
I wonder if the Brian Feild you are refferring to was one of those
pregnancies.