Well, actually, I'm the Brian Peters! I'm in Australia not NZ but my sister is in NZ and she started this crazy hunt. :-)
The history goes like this:
My father was born Stanley Blong but for lots of reasons he was always known as Peters.
His father was John Edward Blong. I never knew him and only recently found out that he actually died in the Isle of Wight in 1988.
His father was Edward Blong b 1878 in Widnes to Peter Blong b 1855 in Ireland, moved to Widnes and m in 1890. Edward was one of nine children (the others being Peter, Polly, Michael, Christopher, James, Eileen, Catherine & Joseph).
I was actually in Port Arlington last year and, on the chart you have in your last note, actually visited the house where Peter Blong (b 1855) was actually brought up. The connection turned out to be that Catherine and Bridget were twins and Bridget married a Quinn. The Quinn's are still on the property.
I also met Ronnie Matthews when I was there and he was the one that pointed me to the Clonmore Blongs (and subsequently Quinn).
I've also been in contact with David Grant who was also researching this whole jigsaw.
It is pretty complex and takes some time to work through!
Thank you for your help.
Brian